Ticket #16643: this-works.diff

wp-admin/js/postbox.dev.js

@@ -82 +82 @@
                 init : function(page, args) {
                         $.extend( this, args || {} );
                         $('#wpbody-content').css('overflow','hidden');
-                        $('.meta-box-sortables').sortable({
+                        // Bug #16643
+                        var selector = ( $.browser.msie && parseInt( $.browser.version ) <= 8 ) ? '.meta-box-sortables:not(#side-sortables)' : '.meta-box-sortables';
+                        $(selector).sortable({
                                 placeholder: 'sortable-placeholder',
                                 connectWith: '.meta-box-sortables',
                                 items: '.postbox',