I think that CC is fully compatible with W7 from the build 2.14.750.
WHAT?S NEW IN CCleaner 2.14.750
- Added support for Windows 7.<-----------------------------------!!!
- Improved Google Chrome support (build 0.4).
- Opera cookie management added.
- Improved Recycle Bin cleaning.
- Added a warning when cleaning Google Chrome and it?s running.
- Search Autocomplete cleaning now XP only.
- Improve file association Registry Cleaning.
- Fixed bug with context menus and excessive CPU usage.
- Fixed GUI colors on high contrast themes.
- Minor GUI bugs fixed.
- Minor performance improvements.
Correct me if I'm wrong...