diff --git a/modules/popup-dialog.php b/modules/popup-dialog.php
index 55f199baa..a87534723 100644
--- a/modules/popup-dialog.php
+++ b/modules/popup-dialog.php
@@ -43,7 +43,7 @@
 			print "<div id=\"infoBoxTitle\">Subscribe to feed</div>";
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id='feed_add_form'>";
+			print "<form id='feed_add_form' onsubmit='return false'>";
 
 			print "<input type=\"hidden\" name=\"op\" value=\"pref-feeds\">";
 			print "<input type=\"hidden\" name=\"quiet\" value=\"1\">";
@@ -80,7 +80,7 @@
 			print "<div id=\"infoBoxTitle\">Search</div>";
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id='search_form'>";
+			print "<form id='search_form'  onsubmit='return false'>";
 
 			#$active_feed_id = db_escape_string($_GET["param"]);
 
@@ -159,7 +159,7 @@
 			print "<div id=\"infoBoxTitle\">Create label</div>";
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id=\"label_edit_form\">";
+			print "<form id=\"label_edit_form\" onsubmit='return false'>";
 
 			print "<input type=\"hidden\" name=\"op\" value=\"pref-labels\">";
 			print "<input type=\"hidden\" name=\"subop\" value=\"add\">"; 
@@ -209,7 +209,7 @@
 			print "<div id=\"infoBoxTitle\">Create filter</div>";
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id=\"filter_add_form\">";
+			print "<form id=\"filter_add_form\" onsubmit='return false'>";
 
 			print "<input type=\"hidden\" name=\"op\" value=\"pref-filters\">";
 			print "<input type=\"hidden\" name=\"quiet\" value=\"1\">";
@@ -327,7 +327,7 @@
 			print "<div id=\"infoBoxTitle\">Edit Tags</div>";
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id=\"tag_edit_form\">";
+			print "<form id=\"tag_edit_form\" onsubmit='return false'>";
 
 			print "Tags for this article (separated by commas):<br>";
 
diff --git a/modules/pref-feeds.php b/modules/pref-feeds.php
index b4c1069fe..0797b2bbd 100644
--- a/modules/pref-feeds.php
+++ b/modules/pref-feeds.php
@@ -146,7 +146,7 @@
 
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id=\"edit_feed_form\">";	
+			print "<form id=\"edit_feed_form\" onsubmit=\"return false\">";	
 
 			print "<input type=\"hidden\" name=\"id\" value=\"$feed_id\">";
 			print "<input type=\"hidden\" name=\"op\" value=\"pref-feeds\">";
@@ -614,7 +614,7 @@
 
 				print "<div class=\"prefFeedCatHolder\">";
 
-				print "<form id=\"feed_cat_edit_form\">";
+				print "<form id=\"feed_cat_edit_form\" onsubmit=\"return false\">";
 
 				print "<table width=\"100%\" class=\"prefFeedCatList\" 
 					cellspacing=\"0\" id=\"prefFeedCatList\">";
diff --git a/modules/pref-filters.php b/modules/pref-filters.php
index e348fe69c..a126a595b 100644
--- a/modules/pref-filters.php
+++ b/modules/pref-filters.php
@@ -22,7 +22,7 @@
 			print "<div id=\"infoBoxTitle\">Filter editor</div>";
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id=\"filter_edit_form\">";
+			print "<form id=\"filter_edit_form\" onsubmit='return false'>";
 
 			print "<input type=\"hidden\" name=\"op\" value=\"pref-filters\">";
 			print "<input type=\"hidden\" name=\"id\" value=\"$filter_id\">";
diff --git a/modules/pref-labels.php b/modules/pref-labels.php
index 3b7d7f79f..71d4d1cc8 100644
--- a/modules/pref-labels.php
+++ b/modules/pref-labels.php
@@ -27,7 +27,7 @@
 			print "<div id=\"infoBoxTitle\">Label editor</div>";
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id=\"label_edit_form\">";
+			print "<form id=\"label_edit_form\" onsubmit='return false'>";
 
 			print "<input type=\"hidden\" name=\"op\" value=\"pref-labels\">";
 			print "<input type=\"hidden\" name=\"id\" value=\"$label_id\">";
diff --git a/modules/pref-prefs.php b/modules/pref-prefs.php
index 66201f8b0..2185646af 100644
--- a/modules/pref-prefs.php
+++ b/modules/pref-prefs.php
@@ -227,7 +227,7 @@
 
 				print "</form>";
 
-				print "<form action=\"backend.php\" method=\"POST\" 
+				print "<form onsubmit=\"return false\" 
 					name=\"change_pass_form\" id=\"change_pass_form\">";
 	
 				print "<table width=\"100%\" class=\"prefPrefsList\">";
diff --git a/modules/pref-users.php b/modules/pref-users.php
index 9835f4c19..46c7ad474 100644
--- a/modules/pref-users.php
+++ b/modules/pref-users.php
@@ -13,7 +13,7 @@
 			
 			print "<div class=\"infoBoxContents\">";
 
-			print "<form id=\"user_edit_form\">";
+			print "<form id=\"user_edit_form\" onsubmit='return false'>";
 
 			print "<input type=\"hidden\" name=\"id\" value=\"$id\">";
 			print "<input type=\"hidden\" name=\"op\" value=\"pref-users\">";
diff --git a/tt-rss.php b/tt-rss.php
index bc337ee31..5adb8dbf7 100644
--- a/tt-rss.php
+++ b/tt-rss.php
@@ -145,7 +145,7 @@ window.onload = init;
 			</select>
 		</div>
 
-		<form id="main_toolbar_form">
+		<form id="main_toolbar_form" onsubmit='return false'>
 
 		<?php echo _('Search:') ?>
 		<input name="query"