Several times now I have clicked on Start to go to Programs and it froze on me. I mean it wouldn't let me go past Start. Then I got a message saying that windows needed to close this program in order to protect my computer. Then it offered me the option of sending an error message. The only thing is I didn't have any program open.

I didn't do anything to try to correct this since I'd have no idea what to do.

Does anyone have any idea why this is happening, what it's about? And what I can or should do about it?