Index: wp-content/themes/twentyten/style.css
===================================================================
--- wp-content/themes/twentyten/style.css	(revision 15228)
+++ wp-content/themes/twentyten/style.css	(working copy)
@@ -383,10 +383,14 @@
 	font-size: 13px;
 	margin-left: 12px;
 }
+#access .menu-header{ /* Fix IE 6 doubled float-margin bug */
+	display: inline;
+}
 #access .menu-header ul,
 div.menu ul {
 	list-style: none;
 	margin: 0;
+	float:left;
 }
 #access .menu-header li,
 div.menu li {