I recently added another 500MB of RAM to my computer… and there was much rejoice.

However, after a few days it started to behave erraticly when pressing the Fn+F12 combo (on a ThinkPad that means “Hibernate”). It simply refused to hibernate with the very intuitive error message “Insufficent System Resources Exist to Complete the API”.

Anyway. Microsoft has a fix for it, and you don’t have to call them to get it anymore either. Just follow the link below.
http://support.microsoft.com/kb/Q909095