diff --git a/plugins/Realtime/realtimeupdate.js b/plugins/Realtime/realtimeupdate.js
index ea1f429b6a..18834d03df 100644
--- a/plugins/Realtime/realtimeupdate.js
+++ b/plugins/Realtime/realtimeupdate.js
@@ -112,13 +112,15 @@ RealtimeUpdate = {
       *
       * @param {Object} data: extended JSON API-formatted notice
       *
-      * @fixme Ticket #2914: already-visible sent notices are still queued up
-      *        when paused, inflating the queue count
-      *
       * @access public
       */
      receive: function(data)
      {
+          if (RealtimeUpdate.isNoticeVisible(data.id)) {
+              // Probably posted by the user in this window, and so already
+              // shown by the AJAX form handler. Ignore it.
+              return;
+          }
           if (RealtimeUpdate._paused === false) {
               RealtimeUpdate.purgeLastNoticeItem();
 
@@ -149,7 +151,7 @@ RealtimeUpdate = {
       */
      insertNoticeItem: function(data) {
         // Don't add it if it already exists
-        if ($("#notice-"+data.id).length > 0) {
+        if (RealtimeUpdate.isNoticeVisible(data.id)) {
             return;
         }
 
@@ -164,6 +166,21 @@ RealtimeUpdate = {
         SN.U.NoticeWithAttachment($('#'+noticeItemID));
      },
 
+     /**
+      * Check if the given notice is visible in the timeline currently.
+      * Used to avoid duplicate processing of notices that have been
+      * displayed by other means.
+      *
+      * @param {number} id: notice ID to check
+      *
+      * @return boolean
+      *
+      * @access private
+      */
+     isNoticeVisible: function(id) {
+        return ($("#notice-"+id).length > 0);
+     },
+
      /**
       * Trims a notice off the end of the timeline if we have more than the
       * maximum number of notices visible.
diff --git a/plugins/Realtime/realtimeupdate.min.js b/plugins/Realtime/realtimeupdate.min.js
index a06c03c4e2..cada974828 100644
--- a/plugins/Realtime/realtimeupdate.min.js
+++ b/plugins/Realtime/realtimeupdate.min.js
@@ -1 +1 @@
-RealtimeUpdate={_userid:0,_replyurl:"",_favorurl:"",_repeaturl:"",_deleteurl:"",_updatecounter:0,_maxnotices:50,_windowhasfocus:true,_documenttitle:"",_paused:false,_queuedNotices:[],init:function(c,b,d,e,a){RealtimeUpdate._userid=c;RealtimeUpdate._replyurl=b;RealtimeUpdate._favorurl=d;RealtimeUpdate._repeaturl=e;RealtimeUpdate._deleteurl=a;RealtimeUpdate._documenttitle=document.title;$(window).bind("focus",function(){RealtimeUpdate._windowhasfocus=true});$(window).bind("blur",function(){$("#notices_primary .notice").removeClass("mark-top");$("#notices_primary .notice:first").addClass("mark-top");RealtimeUpdate._updatecounter=0;document.title=RealtimeUpdate._documenttitle;RealtimeUpdate._windowhasfocus=false;return false})},receive:function(a){if(RealtimeUpdate._paused===false){RealtimeUpdate.purgeLastNoticeItem();RealtimeUpdate.insertNoticeItem(a)}else{RealtimeUpdate._queuedNotices.push(a);RealtimeUpdate.updateQueuedCounter()}RealtimeUpdate.updateWindowCounter()},insertNoticeItem:function(a){if($("#notice-"+a.id).length>0){return}var b=RealtimeUpdate.makeNoticeItem(a);var c=$(b).attr("id");$("#notices_primary .notices").prepend(b);$("#notices_primary .notice:first").css({display:"none"});$("#notices_primary .notice:first").fadeIn(1000);SN.U.NoticeReplyTo($("#"+c));SN.U.NoticeWithAttachment($("#"+c))},purgeLastNoticeItem:function(){if($("#notices_primary .notice").length>RealtimeUpdate._maxnotices){$("#notices_primary .notice:last").remove()}},updateWindowCounter:function(){if(RealtimeUpdate._windowhasfocus===false){RealtimeUpdate._updatecounter+=1;document.title="("+RealtimeUpdate._updatecounter+") "+RealtimeUpdate._documenttitle}},makeNoticeItem:function(c){if(c.hasOwnProperty("retweeted_status")){original=c.retweeted_status;repeat=c;c=original;unique=repeat.id;responsible=repeat.user}else{original=null;repeat=null;unique=c.id;responsible=c.user}user=c.user;html=c.html.replace(/&lt;/g,"<").replace(/&gt;/g,">").replace(/&quot;/g,'"').replace(/&amp;/g,"&");source=c.source.replace(/&lt;/g,"<").replace(/&gt;/g,">").replace(/&quot;/g,'"').replace(/&amp;/g,"&");ni='<li class="hentry notice" id="notice-'+unique+'"><div class="entry-title"><span class="vcard author"><a href="'+user.profile_url+'" class="url" title="'+user.name+'"><img src="'+user.profile_image_url+'" class="avatar photo" width="48" height="48" alt="'+user.screen_name+'"/><span class="nickname fn">'+user.screen_name+'</span></a></span><p class="entry-content">'+html+'</p></div><div class="entry-content"><a class="timestamp" rel="bookmark" href="'+c.url+'" ><abbr class="published" title="'+c.created_at+'">a few seconds ago</abbr></a> <span class="source">from <span class="device">'+source+"</span></span>";if(c.conversation_url){ni=ni+' <a class="response" href="'+c.conversation_url+'">in context</a>'}if(repeat){ru=repeat.user;ni=ni+'<span class="repeat vcard">Repeated by <a href="'+ru.profile_url+'" class="url"><span class="nickname">'+ru.screen_name+"</span></a></span>"}ni=ni+"</div>";ni=ni+'<div class="notice-options">';if(RealtimeUpdate._userid!=0){var a=$("form#form_notice fieldset input#token");var b=a.val();ni=ni+RealtimeUpdate.makeFavoriteForm(c.id,b);ni=ni+RealtimeUpdate.makeReplyLink(c.id,c.user["screen_name"]);if(RealtimeUpdate._userid==responsible.id){ni=ni+RealtimeUpdate.makeDeleteLink(c.id)}else{if(RealtimeUpdate._userid!=user.id){ni=ni+RealtimeUpdate.makeRepeatForm(c.id,b)}}}ni=ni+"</div>";ni=ni+"</li>";return ni},makeFavoriteForm:function(c,b){var a;a='<form id="favor-'+c+'" class="form_favor" method="post" action="'+RealtimeUpdate._favorurl+'"><fieldset><legend>Favor this notice</legend><input name="token-'+c+'" type="hidden" id="token-'+c+'" value="'+b+'"/><input name="notice" type="hidden" id="notice-n'+c+'" value="'+c+'"/><input type="submit" id="favor-submit-'+c+'" name="favor-submit-'+c+'" class="submit" value="Favor" title="Favor this notice"/></fieldset></form>';return a},makeReplyLink:function(c,a){var b;b='<a class="notice_reply" href="'+RealtimeUpdate._replyurl+"?replyto="+a+'" title="Reply to this notice">Reply <span class="notice_id">'+c+"</span></a>";return b},makeRepeatForm:function(c,b){var a;a='<form id="repeat-'+c+'" class="form_repeat" method="post" action="'+RealtimeUpdate._repeaturl+'"><fieldset><legend>Repeat this notice?</legend><input name="token-'+c+'" type="hidden" id="token-'+c+'" value="'+b+'"/><input name="notice" type="hidden" id="notice-'+c+'" value="'+c+'"/><input type="submit" id="repeat-submit-'+c+'" name="repeat-submit-'+c+'" class="submit" value="Yes" title="Repeat this notice"/></fieldset></form>';return a},makeDeleteLink:function(c){var b,a;a=RealtimeUpdate._deleteurl.replace("0000000000",c);b='<a class="notice_delete" href="'+a+'" title="Delete this notice">Delete</a>';return b},initActions:function(a,b,c){$("#notices_primary").prepend('<ul id="realtime_actions"><li id="realtime_playpause"></li><li id="realtime_timeline"></li></ul>');RealtimeUpdate._pluginPath=c;RealtimeUpdate.initPlayPause();RealtimeUpdate.initAddPopup(a,b,RealtimeUpdate._pluginPath)},initPlayPause:function(){if(typeof(localStorage)=="undefined"){RealtimeUpdate.showPause()}else{if(localStorage.getItem("RealtimeUpdate_paused")==="true"){RealtimeUpdate.showPlay()}else{RealtimeUpdate.showPause()}}},showPause:function(){RealtimeUpdate.setPause(false);RealtimeUpdate.showQueuedNotices();RealtimeUpdate.addNoticesHover();$("#realtime_playpause").remove();$("#realtime_actions").prepend('<li id="realtime_playpause"><button id="realtime_pause" class="pause"></button></li>');$("#realtime_pause").text(SN.msg("realtime_pause")).attr("title",SN.msg("realtime_pause_tooltip")).bind("click",function(){RealtimeUpdate.removeNoticesHover();RealtimeUpdate.showPlay();return false})},showPlay:function(){RealtimeUpdate.setPause(true);$("#realtime_playpause").remove();$("#realtime_actions").prepend('<li id="realtime_playpause"><span id="queued_counter"></span> <button id="realtime_play" class="play"></button></li>');$("#realtime_play").text(SN.msg("realtime_play")).attr("title",SN.msg("realtime_play_tooltip")).bind("click",function(){RealtimeUpdate.showPause();return false})},setPause:function(a){RealtimeUpdate._paused=a;if(typeof(localStorage)!="undefined"){localStorage.setItem("RealtimeUpdate_paused",RealtimeUpdate._paused)}},showQueuedNotices:function(){$.each(RealtimeUpdate._queuedNotices,function(a,b){RealtimeUpdate.insertNoticeItem(b)});RealtimeUpdate._queuedNotices=[];RealtimeUpdate.removeQueuedCounter()},updateQueuedCounter:function(){$("#realtime_playpause #queued_counter").html("("+RealtimeUpdate._queuedNotices.length+")")},removeQueuedCounter:function(){$("#realtime_playpause #queued_counter").empty()},addNoticesHover:function(){$("#notices_primary .notices").hover(function(){if(RealtimeUpdate._paused===false){RealtimeUpdate.showPlay()}},function(){if(RealtimeUpdate._paused===true){RealtimeUpdate.showPause()}})},removeNoticesHover:function(){$("#notices_primary .notices").unbind()},initAddPopup:function(a,b,c){$("#realtime_timeline").append('<button id="realtime_popup"></button>');$("#realtime_popup").text(SN.msg("realtime_popup")).attr("title",SN.msg("realtime_popup_tooltip")).bind("click",function(){window.open(a,"","toolbar=no,resizable=yes,scrollbars=yes,status=no,menubar=no,personalbar=no,location=no,width=500,height=550");return false})},initPopupWindow:function(){$(".notices .entry-title a, .notices .entry-content a").bind("click",function(){window.open(this.href,"");return false});$("#showstream .entity_profile").css({width:"69%"})}};
\ No newline at end of file
+RealtimeUpdate={_userid:0,_replyurl:"",_favorurl:"",_repeaturl:"",_deleteurl:"",_updatecounter:0,_maxnotices:50,_windowhasfocus:true,_documenttitle:"",_paused:false,_queuedNotices:[],init:function(c,b,d,e,a){RealtimeUpdate._userid=c;RealtimeUpdate._replyurl=b;RealtimeUpdate._favorurl=d;RealtimeUpdate._repeaturl=e;RealtimeUpdate._deleteurl=a;RealtimeUpdate._documenttitle=document.title;$(window).bind("focus",function(){RealtimeUpdate._windowhasfocus=true});$(window).bind("blur",function(){$("#notices_primary .notice").removeClass("mark-top");$("#notices_primary .notice:first").addClass("mark-top");RealtimeUpdate._updatecounter=0;document.title=RealtimeUpdate._documenttitle;RealtimeUpdate._windowhasfocus=false;return false})},receive:function(a){if(RealtimeUpdate.isNoticeVisible(a.id)){return}if(RealtimeUpdate._paused===false){RealtimeUpdate.purgeLastNoticeItem();RealtimeUpdate.insertNoticeItem(a)}else{RealtimeUpdate._queuedNotices.push(a);RealtimeUpdate.updateQueuedCounter()}RealtimeUpdate.updateWindowCounter()},insertNoticeItem:function(a){if(RealtimeUpdate.isNoticeVisible(a.id)){return}var b=RealtimeUpdate.makeNoticeItem(a);var c=$(b).attr("id");$("#notices_primary .notices").prepend(b);$("#notices_primary .notice:first").css({display:"none"});$("#notices_primary .notice:first").fadeIn(1000);SN.U.NoticeReplyTo($("#"+c));SN.U.NoticeWithAttachment($("#"+c))},isNoticeVisible:function(a){return($("#notice-"+a).length>0)},purgeLastNoticeItem:function(){if($("#notices_primary .notice").length>RealtimeUpdate._maxnotices){$("#notices_primary .notice:last").remove()}},updateWindowCounter:function(){if(RealtimeUpdate._windowhasfocus===false){RealtimeUpdate._updatecounter+=1;document.title="("+RealtimeUpdate._updatecounter+") "+RealtimeUpdate._documenttitle}},makeNoticeItem:function(c){if(c.hasOwnProperty("retweeted_status")){original=c.retweeted_status;repeat=c;c=original;unique=repeat.id;responsible=repeat.user}else{original=null;repeat=null;unique=c.id;responsible=c.user}user=c.user;html=c.html.replace(/&lt;/g,"<").replace(/&gt;/g,">").replace(/&quot;/g,'"').replace(/&amp;/g,"&");source=c.source.replace(/&lt;/g,"<").replace(/&gt;/g,">").replace(/&quot;/g,'"').replace(/&amp;/g,"&");ni='<li class="hentry notice" id="notice-'+unique+'"><div class="entry-title"><span class="vcard author"><a href="'+user.profile_url+'" class="url" title="'+user.name+'"><img src="'+user.profile_image_url+'" class="avatar photo" width="48" height="48" alt="'+user.screen_name+'"/><span class="nickname fn">'+user.screen_name+'</span></a></span><p class="entry-content">'+html+'</p></div><div class="entry-content"><a class="timestamp" rel="bookmark" href="'+c.url+'" ><abbr class="published" title="'+c.created_at+'">a few seconds ago</abbr></a> <span class="source">from <span class="device">'+source+"</span></span>";if(c.conversation_url){ni=ni+' <a class="response" href="'+c.conversation_url+'">in context</a>'}if(repeat){ru=repeat.user;ni=ni+'<span class="repeat vcard">Repeated by <a href="'+ru.profile_url+'" class="url"><span class="nickname">'+ru.screen_name+"</span></a></span>"}ni=ni+"</div>";ni=ni+'<div class="notice-options">';if(RealtimeUpdate._userid!=0){var a=$("form#form_notice fieldset input#token");var b=a.val();ni=ni+RealtimeUpdate.makeFavoriteForm(c.id,b);ni=ni+RealtimeUpdate.makeReplyLink(c.id,c.user["screen_name"]);if(RealtimeUpdate._userid==responsible.id){ni=ni+RealtimeUpdate.makeDeleteLink(c.id)}else{if(RealtimeUpdate._userid!=user.id){ni=ni+RealtimeUpdate.makeRepeatForm(c.id,b)}}}ni=ni+"</div>";ni=ni+"</li>";return ni},makeFavoriteForm:function(c,b){var a;a='<form id="favor-'+c+'" class="form_favor" method="post" action="'+RealtimeUpdate._favorurl+'"><fieldset><legend>Favor this notice</legend><input name="token-'+c+'" type="hidden" id="token-'+c+'" value="'+b+'"/><input name="notice" type="hidden" id="notice-n'+c+'" value="'+c+'"/><input type="submit" id="favor-submit-'+c+'" name="favor-submit-'+c+'" class="submit" value="Favor" title="Favor this notice"/></fieldset></form>';return a},makeReplyLink:function(c,a){var b;b='<a class="notice_reply" href="'+RealtimeUpdate._replyurl+"?replyto="+a+'" title="Reply to this notice">Reply <span class="notice_id">'+c+"</span></a>";return b},makeRepeatForm:function(c,b){var a;a='<form id="repeat-'+c+'" class="form_repeat" method="post" action="'+RealtimeUpdate._repeaturl+'"><fieldset><legend>Repeat this notice?</legend><input name="token-'+c+'" type="hidden" id="token-'+c+'" value="'+b+'"/><input name="notice" type="hidden" id="notice-'+c+'" value="'+c+'"/><input type="submit" id="repeat-submit-'+c+'" name="repeat-submit-'+c+'" class="submit" value="Yes" title="Repeat this notice"/></fieldset></form>';return a},makeDeleteLink:function(c){var b,a;a=RealtimeUpdate._deleteurl.replace("0000000000",c);b='<a class="notice_delete" href="'+a+'" title="Delete this notice">Delete</a>';return b},initActions:function(a,b,c){$("#notices_primary").prepend('<ul id="realtime_actions"><li id="realtime_playpause"></li><li id="realtime_timeline"></li></ul>');RealtimeUpdate._pluginPath=c;RealtimeUpdate.initPlayPause();RealtimeUpdate.initAddPopup(a,b,RealtimeUpdate._pluginPath)},initPlayPause:function(){if(typeof(localStorage)=="undefined"){RealtimeUpdate.showPause()}else{if(localStorage.getItem("RealtimeUpdate_paused")==="true"){RealtimeUpdate.showPlay()}else{RealtimeUpdate.showPause()}}},showPause:function(){RealtimeUpdate.setPause(false);RealtimeUpdate.showQueuedNotices();RealtimeUpdate.addNoticesHover();$("#realtime_playpause").remove();$("#realtime_actions").prepend('<li id="realtime_playpause"><button id="realtime_pause" class="pause"></button></li>');$("#realtime_pause").text(SN.msg("realtime_pause")).attr("title",SN.msg("realtime_pause_tooltip")).bind("click",function(){RealtimeUpdate.removeNoticesHover();RealtimeUpdate.showPlay();return false})},showPlay:function(){RealtimeUpdate.setPause(true);$("#realtime_playpause").remove();$("#realtime_actions").prepend('<li id="realtime_playpause"><span id="queued_counter"></span> <button id="realtime_play" class="play"></button></li>');$("#realtime_play").text(SN.msg("realtime_play")).attr("title",SN.msg("realtime_play_tooltip")).bind("click",function(){RealtimeUpdate.showPause();return false})},setPause:function(a){RealtimeUpdate._paused=a;if(typeof(localStorage)!="undefined"){localStorage.setItem("RealtimeUpdate_paused",RealtimeUpdate._paused)}},showQueuedNotices:function(){$.each(RealtimeUpdate._queuedNotices,function(a,b){RealtimeUpdate.insertNoticeItem(b)});RealtimeUpdate._queuedNotices=[];RealtimeUpdate.removeQueuedCounter()},updateQueuedCounter:function(){$("#realtime_playpause #queued_counter").html("("+RealtimeUpdate._queuedNotices.length+")")},removeQueuedCounter:function(){$("#realtime_playpause #queued_counter").empty()},addNoticesHover:function(){$("#notices_primary .notices").hover(function(){if(RealtimeUpdate._paused===false){RealtimeUpdate.showPlay()}},function(){if(RealtimeUpdate._paused===true){RealtimeUpdate.showPause()}})},removeNoticesHover:function(){$("#notices_primary .notices").unbind()},initAddPopup:function(a,b,c){$("#realtime_timeline").append('<button id="realtime_popup"></button>');$("#realtime_popup").text(SN.msg("realtime_popup")).attr("title",SN.msg("realtime_popup_tooltip")).bind("click",function(){window.open(a,"","toolbar=no,resizable=yes,scrollbars=yes,status=no,menubar=no,personalbar=no,location=no,width=500,height=550");return false})},initPopupWindow:function(){$(".notices .entry-title a, .notices .entry-content a").bind("click",function(){window.open(this.href,"");return false});$("#showstream .entity_profile").css({width:"69%"})}};
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