I have this program on my computer, and I can't remember the christen of it. It cleaned your computer of feeble files and other things. The single point I remember just about that it be free, and it sounded similar to a toilet flushing when it cleaned your computer. Sorry I don't remember any more.
Answers: CrapCleaner is the best and FREE!! :D
Check out the links below
Was it Crap Cleaner (ccleaner)? If so, here's the correlation:
http://www.ccleaner.com/
CCleaner ? O.o
http://www.ccleaner.com/