Still no new information on the cause(s) on the infamous VBSOD there seems to be a few different causes which revolve around the start process stalling due to a driver or service that fails to load. With no way of getting into the system and no recovery console like the XP version had it seems that this problem remains a show stopper for many Vista users.
Unfortunately even if you get the system back through system restore it can go blackscreen again the next day due to the same driver/service problem.
It still sucks!