First BSOD on Vista Business 64 bit

I experienced my first blue screen of death (BSOD) on my Thinkpad X200 tablet running Microsoft Windows Vista Business 64 bit. Everything seems OK now, but all my applications froze and were unresponsive before I got the BSOD. This is my first experience running the 64 bit version of Vista, so I guess we'll have to see how things go. I anticipate that once Windows 7 gets released, I'll be installing that and getting rid of Vista.