Ever since I changed to Windows 7 Ive had a problem with CCleaner scan running extremely slow like 2-5 minuets to scan just the windows tab. I have the latest version of CCleaner and have gone back to older versions to see if I get the same problem , well I did. So I went back to the latest version and tried to find out which setting was the problem. This is what i found out. If I un check (in windows tab)Internet Explorer,Temporary INTERNET files, and in the System files, Temporary files the scans are fairly normal. there seems to be a problem with windows 7 and CCleaner and these temporary files. I just use windows 7 disk cleanup for the temp files. Best I can do, maybe someone can fix the problem.