Anyone ever seen this (or seeing it now?)
In Firefox, I'm not able to see the vendor banner ads that would normally appear at the top of a page such as http://www.xmarksthescot.com/forum/

However, viewing the same URL from Internet Explorer, I see the banner ads.

Is there a cache or cookie issue that I should be looking into, or some Firefox-only peculiarity about the banner ads, that I'm not aware of?