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#1
Yes, don't use the registry cleaner portion of any optimizing software.
Think of it this way. You've got a database that has 30,000 entires in it. Do you think it'll load any faster if you remove 50 entries? Unless those entries are actually causing errors, I suggest you leave them alone.
If you're worried about the missing shared dll files that concern the .NET framework you can always download and reinstall it.
http://www.microsoft.com/downloads/d...displaylang=en
No problem, I also suggest that you download Defraggler. It's from the same company/website as CCleaner. It'll let you defragment your hard drive a bit easier than the stock defrag program. It allows you to run a quick defrag which usually takes care of almost all the files, if you run the quick defrag once a week or so you should be able to avoid large fragmentation. The only time you'll need to run the regular defragmenting mode is if you install a large program or have files larger than 50MB.
Piriform - Download CCleaner, Defraggler, Recuva, Speccy - Millions of users worldwide!
Oh yeah... The latest version of .NET is 4.0, you can download it from the link I provided.
From what I Googled, I don't think I would say that .Net 4 is the most current, because it appears to be a release candidate, even though the MS page that I was taken to didn't specifically say that...as far as I could find.
.NET4.0 is the latest and it is already RTW
Download details: Microsoft .NET Framework 4 (Web Installer)
Just to throw my hat into the ring RE 'fiddling with the registry' - ALWAYS make a backup of it first if anyone is planning on removing entries.
Also never just use the 'select all' option and be done with it.
Registry entries can safely be removed only if you are certain it is safe to do so.
Otherwise - as suggested, leave it alone
Have installed CCleaner on hundreds of machines, used both "Run Cleaner" and Registry tab on it monthly for years with no issues or problems at all.
The Registry cleaner allows you to back up the deleted items so they can be merged back in if there is any problem, but I have never heard of anyone having such a problem in 10 years of it being the industry standard for cleaners for p.c.'s.
I don't even bother backing mine up any longer, as it simply doesn't make mistakes.