I installed iTunes 8 and quicktime and all that on monday when it was released, but I never got around to rebooting my MBP until last night. When I did, it installed the updates just fine while it was shutting down...then when it turned back on, it just switched off a few seconds after the apple logo appeared on the screen. No error or anything, just completely switched off. I tried "safe mode" (holding shift after the gong), which brought up the little spinning "thinking" animation under the apple logo for a few seconds...then it just shut down. I tried PRAM and PMU resets, those had no effect. WTF? So then I tried booting from my windows partition. Everything works fine. I'm actually typing this on my MBP from Vista right now. So this is clearly a software problem, not a hardware one. Of course, I wasn't using Time Machine, so I don't have that to boot from. I can't find my OS X install CD anywhere, so I can't boot from that (I do have an image of it on my external HDD and I tried installing that to my flash drive, but my flash drive is 50MB too small. Can I delete a few files off of the image to get it to fit on my 8GB flash drive?). I have MacDisk installed in Vista, so I can see my whole OS X partition. Is there anything I can do from Vista to analyze my OS X install?