Three times today I have gotten the "blue screen of death" in the span of about 10 minutes. It starts with the hard drive light being solid blue, as if it's working too hard. Then the screen freezes, then the "memory crash dump" blue screen of death. I have to hard boot it every time. Friggin Vista. Gah. It's frustrating, but completely random and unpredictable. Before today it hasn't happened in over a week. Ideas?