Think of the Registry as a massive rule book. Computers cannot think.
They must have instructions for everything.
Those instructions are in the Registry. You'd be amazed at just how detailed the instructions can be.
When I make changes on my system, new rules are automatically added to the rule book. Sometimes old rules are not removed. That's OK. The old rules do not apply to anything anymore, anyway, so Windows just skips over them in a nanosecond.
Virus and malware scans always search the Registry, because the 'baddies' write rules for themselves without permission. The number of entries scanned by your security programs varies. It depends on what they are looking for. The Registry itself has thousands
And duplicates?? Sure, sure, lots of those things might seem to be duplicates,
but really, Windows won't write 2 rules exactly
Now about the so-called Registry "Cleaners." Forgetaboutit!
I have never read a post in which anyone said that such a program corrected any problem,
I have read many in which the problem began after running such an application.
Just say NO!
If (a big 'if') you have Registry concerns, start a thread about it, and listen to the suggestions of the Senior Members.
They will not steer you wrong.
In the meantime, free ERUNT provides quick, easy, effective Registy backup.
ERUNT info and tutorial: http://www.larsheder...erunt/erunt.txt
ERUNT download: http://www.larsheder...nline.de/erunt/