I normally browse exclusively with Firefox, and have noticed only small delays. However, today was using IE7, and I couldn't believe it - it's like Flyertalk is crashing IE --- the page starts to render, (up to an ad, and only the header and ad are displayed), then big delay, then when something else flashes before my eyes, IE goes to a page telling me that my Internet connection isn't working. If I try and refresh the FT page, same thing.
Doesn't happen with all the pages, but once it happens, I basically can't browse Flyertalk without completely closing IE7 (I can browse other sites). It appears to me that the problem is related to advertising/ad code.

IE7 is also complaining, on pages that do render all the way, of being done, but with errors on the page.