Index: postbox.js
===================================================================
--- postbox.js	(revision 21789)
+++ postbox.js	(working copy)
@@ -77,7 +77,6 @@
 				distance: 2,
 				tolerance: 'pointer',
 				forcePlaceholderSize: true,
-				helper: 'clone',
 				opacity: 0.65,
 				stop: function(e,ui) {
 					if ( $(this).find('#dashboard_browser_nag').is(':visible') && 'dashboard_browser_nag' != this.firstChild.id ) {