Last night I took a computer out of my equipment closet so I could install Ubuntu 11.10 on it. I opened it up to make sure that everything was there and used some compressed air to blow out the dust. I plugged it in and sparks flew. There was a series of sparks and loud pops and the smell of burning something. I immediately unplugged the machine and went to bed figuring that I fried the MB. This morning I plugged it in and to my surprise it booted just fine. No problems at all. I can't find any issues on the MB by eye and everything checks out. So what happened? I think I dodged a bullet. The machine has been sitting here running for more than an hour and Ubuntu installed no issue. Did I just get lucky?