iMac 20" intel video problem...
Apparently, the 20" intel iMac with 256 MB VRAM has a problem
(link: Apple's forum thread) with its video card in Front Row. It's so far unclear whether all
20" iMacs with 256 MB VRAM have this problem (update: There are
reports of Macs not
showing the bug), but it's only
been the case with these models. It's also unclear whether Apple can/will solve this with a software (firmware) update or it's a hardware error which would take a recall/replacement. If you've ordered or bought such a machine, I'd advise you to bring it back immediately. If the problem can't be solved immediately, I might look at using the 128 MB VRAM version instead.
That being said,
the problem seems to only affect FrontRow so far, so it does seem it might be a software problem only.
be that Apple solves this with a Software Update. So maybe it's worth it to live with the bugs for a while. (Reason for the strikethrough update: iMovie '06 seems to also reveal the problem at some points...)