Computer failed to suspend 
Failed to suspend after being run for nearly a day. Let's see:
- powered on at home last night; suspended; overnight on power adapter
- unsuspended at customer one site; ran on power adapter; suspended;
- unsuspended at customer two site; ran on power adapter; failed to suspend
Forcibly powered off.
I had been fooling with VMware sessions at customer one, and installed Gadwin's PrintScreen capture utilit, but I don't think that has anything to do with it. I don't think I was doing anything abnormal at customer two site.