CCleaner (formerly Crap Cleaner) is a freeware system optimization and privacy tool. It removes unused and temporary files from your system - allowing Windows to run faster, more efficiently and giving you more hard disk space. The best part is that it's fast! (normally taking less than a second to run) and Free.

change log

- Improved support for IE7 Autocomplete cleaning.
- Added Vista Recycle Bin secure deletion.
- Fixed bug in secure deletion of filenames.
- Fixed bug in "Other Explorer MRUs" cleaning.
- Fixed minor bug in Temp file deletion.
- Added better secure deletion for cookies.
- Fixed Autocomplete cleaning on Win98.
- Improved Hotfix Uninstaller cleaning to ignore Desktop Search.
- Fix bug in saving CCleaner window position.
- Improved System Info routines.
- Minor bugs fixes and GUI tweaks.


http://www.ccleaner.com/