During the last week, my PC is rebooting more than half of the time when I
save a project (both when creating a new one and updating an existing one).  
VS.NET crashing is one thing but I've never seen it cause an automatic reboot
before.  I never install unknown programs and have run anti-virus,
anti-rooktkit checks to ensure malware isn't the culprit.  I have many
minidump files from the crashes but don't know how to interpret them.

Has anyone else experienced this recently?  I did install (and immediately
uninstall) iTunes 5.0 but surely that wouldn't be the cause.

I'll reinstall VS.NET as a last resort but don't want to have to reinstall
all the add-ins as well.

Any help would be very appreciated.