citsym nogard ...see what happens if you logout...delete WC cookies and login again.
I for one am not seeing the text ads in the forum...so it's not necessarily system-wide....
About 90% of the time, when I go to the main (front) page of WC, I see a banner (GalCiv?) loading in the middle of the page, but it disappears after the page is finished loading...however when I move my cursor over the middle of the page, the banner's border appears with alt text that says something about clicking to activate controls. I don't see that on any other page, just the main page. I'm using IE7 beta (latest build), and am also not able to use the "insert picture" feature in this post.
Screenshot: http://img.photobucket.com/albums/v99/amadams/wcscreen.jpg
There were some modifications made to the front page of wincustomize by some of the team to make it faster. You may see these temporary sections (and the dissappearing) until they figure out how to make that a bit quicker.