The advertisements on the right of the page cover notifications in Firefox 3b5. I have no idea whether this happens in earlier versions of firefox.

I'm in firefox 2.0.0.13 and I have the same problem with some ads.

I see this with the MI ad, no matter where it is. I'm sure it's some slick coding to keep it on top. You know, for marketing purposes, if not, it should be. heh.

It's actually an annoying interaction between flash and HTML layers. I don't recall off the top of my head if it affects all flash or only some flash movies, but it can be very annoying when your navigation menus fall victim to the same problem.