PC Pitstop Optimize Software Hangs

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PC Pitstop Optimize Software Hangs

Post by Johnincal » Thu Feb 01, 2007 3:43 pm

When running PC Pitstop's Optimize software in the sandbox, it hangs using 100% CPU when scanning "Registry For Invalid CLSID's".

This is just the trial version that can't change anything. From what I understand, it simply scans and reads the reg.

Shouldn't it work in Sandboxie?

Here is the link to the software:


(By the way, it works outside of the sandbox.)

Also, this may also be the same issue and possibly the same answer. When I scan using Secunia Software Inspector ( http://secunia.com/software_inspector/ ) it shows an error when trying to determine if I have all the latest Windows Updates and then also hangs.

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Post by tzuk » Fri Feb 02, 2007 7:03 pm

Technically it doesn't hang. It just runs very, very slowly.

At least part of the problem is that the keys, as they are scanned, are opened for write access. This causes Sandboxie to create a separate sandboxed key for each instance. Since there are thousands of keys in the CLSID area of the registry, this takes a looooooong time.

I was able to speed it up (manually) by going into the sandboxed registry with RegEdit, and deleting the sandboxed keys created as a side-effect of the scan.

When there are no sandboxed keys, Sandboxie has a lot less "merging" to do, so this considerably speeds up the process. But like I said, this is a manual "fix".

But after doing this during the scan of CLSIDs, the program goes on to scan ProgIDs, TypeLibs, and Interfaces (all below HKEY_CLASSES_ROOT). Finally it goes on to scan the entire registry ...

But eventually I got to "Scan Complete" :!:

* * *

So, I can say there's no bug here, this is just how Sandboxie works: if a program declares it wants write access to a key, then the key is duplicated . . . It's too bad that a program that just scans stuff, opens everything for write access.

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