"Log on process has failed to create the security options dialog."
is the only other part of the error message, doing a ctrl alt delete gets me that message after all programs freeze on my computer.
From time to time to varies. But the problem happens whenever I am running any program. I am mostly using firefox and mirc, but in the past I have not even run firefox and I still got the problem.
After the first time I reformatted I spent several hours making sure I downloaded all 97 updates. I still had the problem.
I thought maybe a file downloaded improperly from the automatic updates, or the fact that automatic updates is running could be the source of the problem. So I have disabled that as well. The problem still persists.
I realize there is a lot of guess and check work when dealing with computer problems, and I have done a lot of guess and check with this problem. One time it was so bad safe mode didn't even work properly, couldn't do a disk clean up. Not sure, but I believe doing an offboot directory sfc/scannow solved it that time and it allowed me to do a disk cleanup as well.
Remember - after going into safe mode and cleaning my thumbnails cache under disk cleanup does solve the problem temporarily. So I believe the source of the problem has something to do with the thumbnails cache.