Wow i am still surprised by this and don't really think 3 people versus millions of people matters. i myself have only learned what to do in pc maintenance and tweaking in the last 3 years but in that time i have my pc in a bad running state only to clean up 250 odd registry errors and defrag up to 16% of the registry which immediately boosted my performance back to fresh windows install speeds. Also i have advised some very uninformed friends to use a couple of registry cleaners and defragers as they were suffering badly on old pc's . they all think i am a god for fixing there pc's over the phone and leaving them with a regular clean up system to keep everything nice and shinny. i know that the temporary file cleaners do a lot of work on these machines towards performance but the registry defrag facility on glary utilities has instantly repaired all slow downs i have cause on my pc in the past. slow downs due to uninstalling several programs. Granted my pc has only 256 mb ram but i still have it booting in 5 secs and running windows explorer and my browser very efficiently. you should just for an experiment, maybe on an old machine if you are so die hard on no registry cleaners, run just the registry defrag option on glary utilities and see what percent it defrags for u. then check your systems performance. The registry may be a very small part of your pc but all programs and activities on your pc go through your registry so it stands to reason that if it is corrupt and bloated with needless misdirecting entries it is going to slow down all actions on your pc. What your guys are saying, the ones you linked for me, is basically that the brain is only a small part of the body so why take care of it. I dont mean to get anybodies goat up but for me the proof is in the pudding all be it a 256 mb pudding..yummmmmmm Thanks again P.S Malwarebytes has also been a fine companion of mine the past few years and i wholeheartedly support and advocate it also.