diff --git a/actions/block.php b/actions/block.php
index e77b634c86..34f991dc61 100644
--- a/actions/block.php
+++ b/actions/block.php
@@ -93,7 +93,8 @@ class BlockAction extends Action
             if ($this->arg('no')) {
                 $cur = common_current_user();
                 $other = Profile::staticGet('id', $this->arg('blockto'));
-                common_redirect(common_local_url('showstream', array('nickname' => $other->nickname)));
+                common_redirect(common_local_url('showstream', array('nickname' => $other->nickname)),
+                                303);
             } elseif ($this->arg('yes')) {
                 $this->blockProfile();
             } elseif ($this->arg('blockto')) {
@@ -102,7 +103,6 @@ class BlockAction extends Action
         }
     }
 
-
     function showContent() {
         $this->areYouSureForm();
     }
@@ -110,7 +110,7 @@ class BlockAction extends Action
     function title() {
         return _('Block user');
     }
-    
+
     function showNoticeForm() {
         // nop
     }
@@ -178,10 +178,11 @@ class BlockAction extends Action
         }
 
         if ($action) {
-            common_redirect(common_local_url($action, $args));
+            common_redirect(common_local_url($action, $args), 303);
         } else {
             common_redirect(common_local_url('subscriptions',
-                                             array('nickname' => $cur->nickname)));
+                                             array('nickname' => $cur->nickname)),
+                            303);
         }
     }
 }
diff --git a/actions/deletenotice.php b/actions/deletenotice.php
index 16e2df8899..6c350b33ab 100644
--- a/actions/deletenotice.php
+++ b/actions/deletenotice.php
@@ -141,6 +141,6 @@ class DeletenoticeAction extends DeleteAction
             $url = common_local_url('public');
         }
 
-        common_redirect($url);
+        common_redirect($url, 303);
     }
 }
diff --git a/actions/disfavor.php b/actions/disfavor.php
index 90bab3ccae..bc13b09da5 100644
--- a/actions/disfavor.php
+++ b/actions/disfavor.php
@@ -49,7 +49,7 @@ class DisfavorAction extends Action
 {
     /**
      * Class handler.
-     * 
+     *
      * @param array $args query arguments
      *
      * @return void
@@ -100,7 +100,8 @@ class DisfavorAction extends Action
             $this->elementEnd('html');
         } else {
             common_redirect(common_local_url('showfavorites',
-                                             array('nickname' => $user->nickname)));
+                                             array('nickname' => $user->nickname)),
+                            303);
         }
     }
 }
diff --git a/actions/editgroup.php b/actions/editgroup.php
index e7e79040a4..39dad0465e 100644
--- a/actions/editgroup.php
+++ b/actions/editgroup.php
@@ -166,7 +166,6 @@ class EditgroupAction extends Action
             return;
         }
 
-
         $nickname    = common_canonical_nickname($this->trimmed('nickname'));
         $fullname    = $this->trimmed('fullname');
         $homepage    = $this->trimmed('homepage');
@@ -221,7 +220,7 @@ class EditgroupAction extends Action
         if ($this->group->nickname != $orig->nickname) {
             common_redirect(common_local_url('editgroup',
                                              array('nickname' => $nickname)),
-                            307);
+                            303);
         } else {
             $this->showForm(_('Options saved.'));
         }
diff --git a/actions/favor.php b/actions/favor.php
index 3940df6888..3b7d979ebc 100644
--- a/actions/favor.php
+++ b/actions/favor.php
@@ -52,7 +52,7 @@ class FavorAction extends Action
 {
     /**
      * Class handler.
-     * 
+     *
      * @param array $args query arguments
      *
      * @return void
@@ -100,13 +100,14 @@ class FavorAction extends Action
             $this->elementEnd('html');
         } else {
             common_redirect(common_local_url('showfavorites',
-                                             array('nickname' => $user->nickname)));
+                                             array('nickname' => $user->nickname)),
+                            303);
         }
     }
 
     /**
      * Notifies a user when his notice is favorited.
-     * 
+     *
      * @param class $notice favorited notice
      * @param class $user   user declaring a favorite
      *
diff --git a/actions/finishaddopenid.php b/actions/finishaddopenid.php
index 8f10505cff..32bceecfd5 100644
--- a/actions/finishaddopenid.php
+++ b/actions/finishaddopenid.php
@@ -139,7 +139,7 @@ class FinishaddopenidAction extends Action
 
             oid_set_last($display);
 
-            common_redirect(common_local_url('openidsettings'));
+            common_redirect(common_local_url('openidsettings'), 303);
         }
     }
 
diff --git a/actions/finishopenidlogin.php b/actions/finishopenidlogin.php
index 52d9be29c1..952185742f 100644
--- a/actions/finishopenidlogin.php
+++ b/actions/finishopenidlogin.php
@@ -271,7 +271,8 @@ class FinishopenidloginAction extends Action
             common_rememberme($user);
         }
         unset($_SESSION['openid_rememberme']);
-        common_redirect(common_local_url('showstream', array('nickname' => $user->nickname)));
+        common_redirect(common_local_url('showstream', array('nickname' => $user->nickname)),
+                        303);
     }
 
     function connectUser()
@@ -324,7 +325,7 @@ class FinishopenidloginAction extends Action
                                     array('nickname' =>
                                           $nickname));
         }
-        common_redirect($url);
+        common_redirect($url, 303);
     }
 
     function bestNewNickname($display, $sreg)
diff --git a/actions/finishremotesubscribe.php b/actions/finishremotesubscribe.php
index eaf57c2d8f..d54c29a603 100644
--- a/actions/finishremotesubscribe.php
+++ b/actions/finishremotesubscribe.php
@@ -230,7 +230,8 @@ class FinishremotesubscribeAction extends Action
         # show up close to the top of the page
 
         common_redirect(common_local_url('subscribers', array('nickname' =>
-                                                             $user->nickname)));
+                                                             $user->nickname)),
+                        303);
     }
 
     function add_avatar($profile, $url)
diff --git a/actions/joingroup.php b/actions/joingroup.php
index eeea4a37bf..a5d82ddc77 100644
--- a/actions/joingroup.php
+++ b/actions/joingroup.php
@@ -143,7 +143,8 @@ class JoingroupAction extends Action
             $this->elementEnd('html');
         } else {
             common_redirect(common_local_url('groupmembers', array('nickname' =>
-                                                                   $this->group->nickname)));
+                                                                   $this->group->nickname)),
+                            303);
         }
     }
 }
\ No newline at end of file
diff --git a/actions/leavegroup.php b/actions/leavegroup.php
index eb30d0e505..215ccd9017 100644
--- a/actions/leavegroup.php
+++ b/actions/leavegroup.php
@@ -147,7 +147,8 @@ class LeavegroupAction extends Action
             $this->elementEnd('html');
         } else {
             common_redirect(common_local_url('groupmembers', array('nickname' =>
-                                                                   $this->group->nickname)));
+                                                                   $this->group->nickname)),
+                            303);
         }
     }
 }
diff --git a/actions/login.php b/actions/login.php
index b049791fb1..59c6b4874b 100644
--- a/actions/login.php
+++ b/actions/login.php
@@ -138,7 +138,7 @@ class LoginAction extends Action
                                           $nickname));
         }
 
-        common_redirect($url);
+        common_redirect($url, 303);
     }
 
     /**
diff --git a/actions/logout.php b/actions/logout.php
index 3977f90a03..b7681be382 100644
--- a/actions/logout.php
+++ b/actions/logout.php
@@ -46,10 +46,10 @@ require_once INSTALLDIR.'/lib/openid.php';
  */
 class LogoutAction extends Action
 {
-    
+
     /**
      * This is read only.
-     * 
+     *
      * @return boolean true
      */
     function isReadOnly()
@@ -59,7 +59,7 @@ class LogoutAction extends Action
 
     /**
      * Class handler.
-     * 
+     *
      * @param array $args array of arguments
      *
      * @return nothing
@@ -73,7 +73,7 @@ class LogoutAction extends Action
             common_set_user(null);
             common_real_login(false); // not logged in
             common_forgetme(); // don't log back in!
-            common_redirect(common_local_url('public'));
+            common_redirect(common_local_url('public'), 303);
         }
     }
 }
diff --git a/actions/newgroup.php b/actions/newgroup.php
index cbd8dfeec5..67cd6b2f18 100644
--- a/actions/newgroup.php
+++ b/actions/newgroup.php
@@ -193,7 +193,7 @@ class NewgroupAction extends Action
 
         $group->query('COMMIT');
 
-        common_redirect($group->homeUrl(), 307);
+        common_redirect($group->homeUrl(), 303);
     }
 
     function nicknameExists($nickname)
diff --git a/actions/nudge.php b/actions/nudge.php
index bc3d484788..b4e5e01dd8 100644
--- a/actions/nudge.php
+++ b/actions/nudge.php
@@ -50,7 +50,7 @@ class NudgeAction extends Action
 {
      /**
      * Class handler.
-     * 
+     *
      * @param array $args array of arguments
      *
      * @return nothing
@@ -75,7 +75,7 @@ class NudgeAction extends Action
 
         // CSRF protection
         $token = $this->trimmed('token');
-        
+
         if (!$token || $token != common_session_token()) {
             $this->clientError(_('There was a problem with your session token. Try again, please.'));
             return;
@@ -100,7 +100,8 @@ class NudgeAction extends Action
         } else {
             // display a confirmation to the user
             common_redirect(common_local_url('showstream',
-                                             array('nickname' => $other->nickname)));
+                                             array('nickname' => $other->nickname)),
+                            303);
         }
     }
 
diff --git a/actions/remotesubscribe.php b/actions/remotesubscribe.php
index af130f4258..2e721a38b0 100644
--- a/actions/remotesubscribe.php
+++ b/actions/remotesubscribe.php
@@ -99,7 +99,7 @@ class RemotesubscribeAction extends Action
         $this->elementStart('fieldset');
         $this->element('legend', 'Subscribe to a remote user');
         $this->hidden('token', common_session_token());
-        
+
         $this->elementStart('ul', 'form_data');
         $this->elementStart('li');
         $this->input('nickname', _('User nickname'), $this->nickname,
@@ -407,7 +407,7 @@ class RemotesubscribeAction extends Action
 
         # Redirect to authorization service
 
-        common_redirect($req->to_url());
+        common_redirect($req->to_url(), 303);
         return;
     }
 }
diff --git a/actions/smssettings.php b/actions/smssettings.php
index a5f75d266c..922bab9a4e 100644
--- a/actions/smssettings.php
+++ b/actions/smssettings.php
@@ -488,7 +488,8 @@ class SmssettingsAction extends ConnectSettingsAction
         }
 
         common_redirect(common_local_url('confirmaddress',
-                                         array('code' => $code)));
+                                         array('code' => $code)),
+                        303);
     }
 
     /**
diff --git a/actions/subedit.php b/actions/subedit.php
index 89081ffc76..8ca2d79146 100644
--- a/actions/subedit.php
+++ b/actions/subedit.php
@@ -85,7 +85,8 @@ class SubeditAction extends Action
             }
 
             common_redirect(common_local_url('subscriptions',
-                                             array('nickname' => $cur->nickname)));
+                                             array('nickname' => $cur->nickname)),
+                            303);
         }
     }
 }
diff --git a/actions/subscribe.php b/actions/subscribe.php
index f761992de4..0bc522867e 100644
--- a/actions/subscribe.php
+++ b/actions/subscribe.php
@@ -75,7 +75,8 @@ class SubscribeAction extends Action
             $this->elementEnd('html');
         } else {
             common_redirect(common_local_url('subscriptions', array('nickname' =>
-                                                                $user->nickname)));
+                                                                $user->nickname)),
+                            303);
         }
     }
 }
diff --git a/actions/tag.php b/actions/tag.php
index 231f2c2992..d15f64498d 100644
--- a/actions/tag.php
+++ b/actions/tag.php
@@ -33,7 +33,9 @@ class TagAction extends Action
         }
 
         if ($this->tag != $taginput) {
-            common_redirect(common_local_url('tag', array('tag' => $this->tag)));
+            common_redirect(common_local_url('tag', array('tag' => $this->tag)),
+                            301);
+            return false;
         }
 
         $this->page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;
diff --git a/actions/tagother.php b/actions/tagother.php
index 0d18945a09..0c5bb7cf3e 100644
--- a/actions/tagother.php
+++ b/actions/tagother.php
@@ -221,7 +221,8 @@ class TagotherAction extends Action
             $this->elementEnd('html');
         } else {
             common_redirect(common_local_url($action, array('nickname' =>
-                                                            $user->nickname)));
+                                                            $user->nickname)),
+                            303);
         }
     }
 
diff --git a/actions/unblock.php b/actions/unblock.php
index bad4963534..8573b2a873 100644
--- a/actions/unblock.php
+++ b/actions/unblock.php
@@ -116,10 +116,11 @@ class UnblockAction extends Action
             }
         }
         if ($action) {
-            common_redirect(common_local_url($action, $args));
+            common_redirect(common_local_url($action, $args), 303);
         } else {
             common_redirect(common_local_url('subscriptions',
-                                             array('nickname' => $cur->nickname)));
+                                             array('nickname' => $cur->nickname)),
+                            303);
         }
     }
 }
diff --git a/actions/unsubscribe.php b/actions/unsubscribe.php
index b1e2b64256..7dcab04c04 100644
--- a/actions/unsubscribe.php
+++ b/actions/unsubscribe.php
@@ -77,7 +77,8 @@ class UnsubscribeAction extends Action
             $this->elementEnd('html');
         } else {
             common_redirect(common_local_url('subscriptions', array('nickname' =>
-                                                                    $user->nickname)));
+                                                                    $user->nickname)),
+                            303);
         }
     }
 }
diff --git a/lib/openid.php b/lib/openid.php
index f3769c6fce..3af7a39cfa 100644
--- a/lib/openid.php
+++ b/lib/openid.php
@@ -171,7 +171,7 @@ function oid_authenticate($openid_url, $returnto, $immediate=false)
         } else if (Auth_OpenID::isFailure($redirect_url)) {
             return sprintf(_('Could not redirect to server: %s'), $redirect_url->message);
         } else {
-            common_redirect($redirect_url);
+            common_redirect($redirect_url, 303);
         }
     } else {
         // Generate form markup and render it.
diff --git a/lib/settingsaction.php b/lib/settingsaction.php
index 53c807c6f9..db20c58043 100644
--- a/lib/settingsaction.php
+++ b/lib/settingsaction.php
@@ -78,9 +78,9 @@ class SettingsAction extends Action
             common_set_returnto($this->selfUrl());
             $user = common_current_user();
             if ($user->hasOpenID()) {
-                common_redirect(common_local_url('openidlogin'));
+                common_redirect(common_local_url('openidlogin'), 303);
             } else {
-                common_redirect(common_local_url('login'));
+                common_redirect(common_local_url('login'), 303);
             }
         } else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
             $this->handlePost();