It's my understanding that prefetch is automatically optimized to preload things during the boot process and that deleting is actually slows performance. What was the thought behind making this part of CCleaner?
But it also can slow down your system if you always clean it it will go slow but I recommend you to clean it once a month okay?
No, CCleaner won't do that. As it only cleans the prefetch that is older than 60 days (last I heard).
As I understand it anything that old would have been automatically purged. it should never need "cleaning" according to what I've read.
Maybe in theory but, in several PC's, the first time I've cleared Prefetch I've found entries that are months old (often related to old software or one-time executables such as installers). Take a look first if you want to see what's accumulated ... C:\WINDOWS\Prefetch
The stuff you're using regularly will get "refreshed" and show recent dates. Cleaner won't delete those so performance won't be compromised.
Ugh..
This has been discussed over and over again. Yes ccleaner cleans prefecth data that is older than 60 days. If you don't want this to be done than uncheck the box, simple as that.
Glenn you are absolutely right.