A optimizing computer site says that CCleaner slows down the system performance by deleting old prefetch file you can prevent this by opening CCleaner under system uncheck Old Prefetch Data
Pardon me but you were part of this thread: http://forum.ccleaner.com/index.php?showtopic=3343
In any case, those who clean Prefetch know the effects; those who don't theorize.... but I recommend you to clean it once a month ...
Anwar,
Your use of the English language varies from post to post. I get the impression you sometimes hide behind words pretending not to understand advice, and then write in poor English when you want to annoy people.
This particular post is a very old thread, I am afraid you will have to cast your line with a different bait, there will not be many bites for this.
Someone is bringing up the old prefetch crap again. Read old threads before bringing up old bs.