Enabling JS + CSS Optimization causing insertion of extra anchor tags

Hi,

I've used Drupal 6.8 to build the following site.

The extended menu (under solutions / services) is based on a views + jquery + css. Basically the menu is built by views. Hovering the relevant entry uses jquery hover callback to show the view.
It all plays very nice till I enable the css + js optimization (performance page). This is causing sporadic behavior on which extra anchor tags are inserted within the menu entries.
Additional relevant facts:
1. This only happens on FF (tried FF2.0, don't know about FF3.0)
2. This only happens on my remote LAMP server (Linux CentOS 5 + PHP5.1.6 + Apache 2.2.3). On my local WAMP environment I could not reproduce.
3. When viewing the html source the extra anchors do not appear. On the Firebug I do see them so the conclusion is that the browser somehow mess up the DOM when composing the HTML and the CSS+JS
4. I tried disabling only JS / CSS. Only when both disabled the menu is working as expected.

Any ideas how to make it work with the optimization enabled?

Thanks!