CMS Made Simple Forums

I have had a strange problem pointed out to me and I wonder if anyone else has observed/solved 

I just tested with 1.5 beta1 and the problem still exists.

To duplicate:

1.  Load latest/stable CMSms.
2.  Change default theme to CSSMenu top + 2 columns
3.  Click Set all Pages

Now, periodically, when viewing the site with IE7, you will see odd blank sub-sub menus, like the attached image.

Has anyone else observed/solved this ?

This issue is everywhere, isn't it? Good ol' IE for ya...

At the hope of getting at a workaround for this, let me try rephrasing this question a bit...

Does ANYONE have a CMSms site with a three-level css menu navigation that is actually bug-free in IE?

The one I use is bug free to 4 levels

Link here