i have a few PCI cards (Miglia Alchemy DVR, SIIG SATA, Koutech FW/USB) that i've tried in the different slots in my Rev. A PM 2.0. they all work in slot 4, the one that runs at 133 MHz. however, none of them work in slots 2 and 3. i've tried them individually, in tandem, etc., but only one card at at time works, and it's only in slot 4. i took the PM to the genius bar today and the "genius" said that individual cards are hit and miss as to whether they'll work or not. i understand that. we all know of the deep sleep issues with some of the cards and that some cards don't seem to work as well as others. BUT, am i missing something by thinking that IF the card works perfectly fine in slot 4, it SHOULD also work in slots 2/3? are slots 2/3 and 4 so different from one another? all the cards i have run at much less than 100 MHz, probably at 66MHz... i left the PM with the apple store and they're going to check it out, but the "genius" doesn't think they'll find anything (on a side note, he was the worst genius i've ever talked to/dealt with...not very friendly...also had to correct him on some of the issues). can anyone clarify things for me? thanks!