CS2 resets

I installed CS2 a few months ago. Occasionally when I load Photoshop it reverts to some default mode. My printer settings are changed, grid settings changed, workspace back to default %26amp; several other changes are made. I put everything as i want it but sometime later a Photoshop load will revert to some default configuration. Saving my workspace does not prevent the reversion but i can get my workspace back using the saved workspace. All the other settings remain screwed up until I go through the whole routine of changing back to my settings. Tried calling tech help but can't get through.