How long have you waited for a machine to respond while it was hung? I was doing some coding and did a boo-boo while drag and dropping a file, it hung my machine pretty hard. It was only responding to most repaints and mouse clicks about one every 10 minutes. It took 2.5 hours before I was able to terminate the process. I didn't want to reset because the drive light was blinking every second, and I've done the corrupted HD thing before. I could tell it wasn't totally hung because some things like tray icons were updating fast, just not the main windows. Good thing I had another machine to surf the web with, found some good things!