diff --git a/actions/doc.php b/actions/doc.php
index 25d363472a..eaf4b7df2d 100644
--- a/actions/doc.php
+++ b/actions/doc.php
@@ -54,6 +54,9 @@ class DocAction extends Action
         parent::prepare($args);
 
         $this->title  = $this->trimmed('title');
+        if (!preg_match('/^[a-zA-Z0-9_-]*$/', $this->title)) {
+            $this->title = 'help';
+        }
         $this->output = null;
 
         $this->loadDoc();
diff --git a/classes/User.php b/classes/User.php
index 022044aac1..0ab816b57e 100644
--- a/classes/User.php
+++ b/classes/User.php
@@ -250,10 +250,6 @@ class User extends Memcached_DataObject
 
         $user->nickname = $nickname;
 
-        if (!empty($password)) { // may not have a password for OpenID users
-            $user->password = common_munge_password($password, $id);
-        }
-
         // Users who respond to invite email have proven their ownership of that address
 
         if (!empty($code)) {
@@ -286,6 +282,9 @@ class User extends Memcached_DataObject
 
             $user->id = $id;
             $user->uri = common_user_uri($user);
+            if (!empty($password)) { // may not have a password for OpenID users
+                $user->password = common_munge_password($password, $id);
+            }
 
             $result = $user->insert();
 
@@ -945,9 +944,9 @@ class User extends Memcached_DataObject
 
             $pr->orderBy('created');
 
-            $pr->limit(0, 1);
+            $pr->limit(1);
 
-            if ($pr->fetch($true)) {
+            if ($pr->find(true)) {
                 $owner = User::staticGet('id', $pr->profile_id);
             } else {
                 $owner = null;
diff --git a/scripts/clearcache.php b/scripts/clearcache.php
new file mode 100644
index 0000000000..702c1e3d67
--- /dev/null
+++ b/scripts/clearcache.php
@@ -0,0 +1,70 @@
+#!/usr/bin/env php
+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2009, StatusNet, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
+
+$shortoptions = "t:c:v:k:";
+
+$helptext = <<<ENDOFHELP
+USAGE: clearcache.php <args>
+clears the cached object based on the args
+
+  -t table     Table to look up
+  -c column    Column to look up, default "id"
+  -v value     Value to look up
+  -k key       Key to look up; other args are ignored
+
+ENDOFHELP;
+
+require_once INSTALLDIR.'/scripts/commandline.inc';
+
+$karg = get_option_value('k');
+
+if (!empty($karg)) {
+    $k = common_cache_key($karg);
+} else {
+    $table = get_option_value('t');
+    if (empty($table)) {
+        die("No table or key specified\n");
+    }
+    $column = get_option_value('c');
+    if (empty($column)) {
+        $column = 'id';
+    }
+    $value = get_option_value('v');
+
+    $k = Memcached_DataObject::cacheKey($table, $column, $value);
+}
+
+print "Clearing key '$k'...";
+
+$c = common_memcache();
+
+if (empty($c)) {
+    die("Can't initialize cache object!\n");
+}
+
+$result = $c->delete($k);
+
+if ($result) {
+    print "OK.\n";
+} else {
+    print "FAIL.\n";
+}