I've had this problem many times before...as of yesterday or so, I had over a gig free on my C drive, and just now I got a low disk space warning, with only 170 mb left. How is this possible? I did just upgrade to Service Pack 2, but I don't think that's it, cuz this has happened before. It's as if almost a gig of stuff was dumped on my drive. Are there any folders I can go through to search for temp files that may have been just added. And I just did a spyware check, there was only a couple to delete, so I don't think it's that either.