Menu display problem in IE
 

Hi folks,

I've got a funny menu display in IE (tested with version 8) but not in Firefox. Currently using Atahualp 3.4.5.1 and wordpress 2.9.1

http://www.high-peak-systems.com

The menu does not seem to 'refresh' correctly. If I highlight as an example the product menu and then Zuken to display a list of all those children the the menu items all display fine. If I move to as an example solutions on the menu and then Mechanical again all child entries display. If I now go back to the Products menu the menus are still expanded but the child entries are blank.

Struggling to find the cause. Any help would be appreciated.