Windows Installer folder abnormally large

We have multiple systems that are running Windows Server 2003 and Windows XP Pro that the hidden system Windows Installer folder is between 6GB and 16GB. On most of the other systems I've checked it's been under 600mb.  We've contact Microsoft but have not had the problem resolved.
alphaengrAsked:
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johnb6767Commented:
JAM Software - Windows Freeware
http://www.jam-software.com/software.html

Diruse Overview
http://technet2.microsoft.com/WindowsServer/en/Library/9c846489-03cb-4848-8805-aa17430b84eb1033.mspx

Treesize will give you a graphical view by folder, of the file sizes included, and tell you where the space is being used.....

Diruse will also show folders that you dont have access to.....

See if you can pinpoint if it is just a few folders that are excessively large, or if there is just a crapload....
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alphaengrAuthor Commented:
There really isn't any files or folders that are pointing to the problem. No files are greater than 100mb and only 6 are that large. The rest of the 1,500 files are less than 18mb. The total "Installer" folder size on this SBS Server is 12GB.

Thanks
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johnb6767Commented:
Wouldnt expect that many things to be installed on the machine....

Have you isolated the apps responsible for those 6 large folders?
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alphaengrAuthor Commented:
I haven't checked the larger files only because it's not even 10%. I did notice both Servers have Symantec Live update error with Backup Exec. Temporarly we moved the files in the Installer folder to another volume. Since this was done about two weeks ago the Windows\installer hasn't grown. I did notice 451 files were created on 12/12/07 and 228 files were created on 12/21/07. A lot of the .msp files are related to beremote.exe from Backup exec. My guess is the Windows XP system with the error is a separate issue. I'm going to get the Liveupdate problem resolved with BE 11D and see if that helps and also see how much of the installer files are related to the Live update.

Thanks
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Gator-OBCommented:
We are having the same issue on WIN XP boxes and the issue appears to be failed Windows updates which are continually applied. Sort by size and you will see a large number of files the same exact size but with random names. DoubleKiller verifies that these files are identical.
We are deleteing the duplicates and then applying the latest version of Windows installer on these boxes but have not confirmed that this solves the problem.
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alphaengrAuthor Commented:
We figured out the cause on a couple of the Servers is related to Symantec Live Update failures. Backup Exec was continually trying to install updates but wasn't able to.  Reinstalling Backup Exec allowed us to install the updates.
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