Bug 544300, IE isn't nearly important enough to warrant a :hover fix that causes this much lag

media/css/main-mozilla.css

@@ -2556,16 +2556,18 @@ html[xmlns] .clearfix {
 .addon-tags li .removetag {
     display:none;
 }
-.addon-tags li.hover .removetag,
+.addon-tags li:hover .removetag,
 #tags .nojs li .removetag {
     display:inline;
     background: transparent url(../../img/amo2009/icons/cross.png) no-repeat left;
     border: none;
     margin: 0;
+    padding: 0;
+    padding-left: 12px;
     text-indent: -1000px;
     /* IE7 fix in ie7.css */
 }
-.html-rtl .addon-tags li.hover .removetag,
+.html-rtl .addon-tags li:hover .removetag,
 .html-rtl #tags .nojs li .removetag {
     background-position: right;
 }

media/js/zamboni/tags.js

@@ -54,14 +54,6 @@ $(document).ready(function(){
         e.stopPropagation();
     });
 
-    $("#tags .developertag, #tags .usertag")
-        .live("mouseover",function(){
-            $(this).addClass("hover");
-            })
-        .live("mouseout",function(){
-            $(this).removeClass("hover");
-            });
-
     $("#addatag").click(function(e){
         $(".addtagform")
             .removeClass("hidden")