Blue screen...system is busy, blah, blah, blah

I have a user whose computer keeps hanging up. I would say 8 out of ten times she's deleting email in Outlook. I first reinstalled Windows. That didn't help. I then reinstalled Office. That seemed to help at first...but the problem reared its ugly head a couple of days later. I've ran SFC. I've ran two different spywares (Adaware and Spybot). AV is up to date and detects nothing. I deleted the swap file and rebooted. Did that this morning. So far...she's running okay. Just had her delete some emails...and it didn't blow up. However...when she goes back to the Inbox...it tells her the view is damaged, default view settings will be used.

Anyone have any suggestions?

What is the text of the BSOD error message?

It doesn't have any error codes. It comes after I Ctrl/Alt/Del and try to end any task that might not be responding. The blue screen simply says the system is either busy or not responding. Press and key to continue or Ctrl/Alt/Del again to reboot.

If Windows was managing the swapfile size, then configure a static SF(min and max the same size, like a few hundred MB), and see what happens.