I've experimented with 3 different systems, 3 different capture cards (all Hauppauge - external powered USB analog, 2200, Nova-S) with Vista and most recently Win7 for running MCE as my entertainment system. I've noticed that on all three systems that I frequently get BSODs when it wakes from sleep. It was happening so regularly, that i figured out that it was worthwhile to schedule the computer to wakeup at 5am so it could do its BSOD thing then, instead of during a scheduled recording. I had a gander through the event viewer to figure out what was up, but gave up.
Do i just have bad luck, or is everyone else experiencing about the same thing? Are the linux solutions rock-solid? I'd like to stick with windows solution as I actually get a decent amount of content through iTunes.
btw - all the boxes i tried were Dell (maybe that's my problem right there)