Better!
One thing I noticed... sub menus get reset once you make a selection (in Firefox 1.0.2). For example, if I select "Drivers -> M130", the proper page will load in the main panel, but the "Drivers" menu closes to hide all of the options. You probably only want to close submenu listings if you chose another main menu option.
Is it just me, or does the site appear a bit slow? When I select new menu options, there is a definite pause before loading the main page. I'm at work with a fat internet connection and have all of the Firefox speed tips implemented. As a result, I don't think the issue is on my end, but I'll check again when I get home (to my DSL connection and Firefox). This certainly isn't a show stopper, just another (constructive) comment. Of course, it could be the flood of AC members hitting your server!
