? jquery.hoverIntent.js
Index: admin_menu.css
===================================================================
RCS file: /cvs/drupal/contributions/modules/admin_menu/admin_menu.css,v
retrieving revision 1.25.2.4.2.3
diff -u -p -r1.25.2.4.2.3 admin_menu.css
--- admin_menu.css	4 Apr 2009 15:23:18 -0000	1.25.2.4.2.3
+++ admin_menu.css	11 Jun 2009 01:05:30 -0000
@@ -118,7 +118,10 @@ body.admin-menu {
 #admin-menu li.iehover ul ul,
 #admin-menu li.iehover ul ul ul,
 #admin-menu li.iehover ul ul ul ul,
-#admin-menu li.iehover ul ul ul ul ul {
+#admin-menu li.iehover ul ul ul ul ul,
+/* Override the hover state if JavaScript is enabled */
+/* IE6 doesn't need this override, so we can use the child selector */
+html.js #admin-menu li:hover > ul {
   display: none;
   left: -999em;
 }
Index: admin_menu.js
===================================================================
RCS file: /cvs/drupal/contributions/modules/admin_menu/admin_menu.js,v
retrieving revision 1.7.2.7.2.11
diff -u -p -r1.7.2.7.2.11 admin_menu.js
--- admin_menu.js	8 Jun 2009 01:05:38 -0000	1.7.2.7.2.11
+++ admin_menu.js	11 Jun 2009 01:05:31 -0000
@@ -162,7 +162,7 @@ Drupal.admin.behaviors.destination = fun
 Drupal.admin.behaviors.hover = function (context, $adminMenu) {
   // Hover emulation for IE 6.
   if ($.browser.msie && parseInt(jQuery.browser.version) == 6) {
-    $('li', $adminMenu).hover(function() {
+    $('li', $adminMenu).hoverIntent(function() {
       $(this).addClass('iehover');
     }, function() {
       $(this).removeClass('iehover');
@@ -170,7 +170,7 @@ Drupal.admin.behaviors.hover = function 
   }
 
   // Delayed mouseout.
-  $('li', $adminMenu).hover(function() {
+  $('li', $adminMenu).hoverIntent(function() {
     // Stop the timer.
     clearTimeout(this.sfTimer);
     // Display child lists.
Index: admin_menu.module
===================================================================
RCS file: /cvs/drupal/contributions/modules/admin_menu/admin_menu.module,v
retrieving revision 1.43.2.17.2.9
diff -u -p -r1.43.2.17.2.9 admin_menu.module
--- admin_menu.module	5 Jun 2009 20:51:38 -0000	1.43.2.17.2.9
+++ admin_menu.module	11 Jun 2009 01:05:31 -0000
@@ -106,6 +106,7 @@ function admin_menu_init() {
   }
   // Performance: Defer execution.
   drupal_add_js($path . '/admin_menu.js', 'module', 'header', TRUE);
+  drupal_add_js($path . '/jquery.hoverIntent.js', 'module', 'header', TRUE);
 
   // Destination query strings are applied via JS.
   $settings['destination'] = drupal_get_destination();