It doesn't really make them stop regenerating. Looking at my previous post I might have worded a couple things incorrectly. They just might not have been generated lately, and the more often you clean them out, the less are going to be there each time you look. I don't think there is anything wrong, but if you still think some are missing, go to Computer, right click C, and click properties. Run Disk Cleanup and you can delete all log and temporary files from there.