The comodo system cleaner (CSC) eliminated my Start Menu items (history of recently opened), now no new programs will appear or can I assign programs to this, and it also eliminated the "PIN to Start Menu" command from my drop down menu. The CSC would not restore from backup, and the System Restore would not restore. So I did a reinstall of Windows7 (not full), which still did not solve the problem, so now i have to reformat. Comodo Support was no help. Any register cleaner that would do this is not worth the risk of using. I have used several registry cleaners that have never done that. Also others are saying they are having problems too. So this is another uninstall (along with the constantly nagging Firewall) and a hellava lot of work to reform and reinstall my programs.