Maybe CCleaner should clean .log and .bak and .tmp files
CCleaner does clean .log and .tmp. That's one of it's main features, based on program of course. Plus, it's always being worked on. Either by MrG to add to CCleaner or me working on it in winapp2.ini. .bak is a bad idea.
#1. It will just recreate it.
#2. Will have no .bak incase you have a problem.
#3. Backup reasons.
Empty files and folders is not a good.
Files: 98% of the time they will recreate themselves or it will cause a program error.
Folders: Can cause program errors.
Program Files\Common Files\ can cause serious crashes with programs installed unless you know what you are doing.
Clean what in Documents and Settings? CCleaner already does, a lot.