Add or Remove Programs corrupted--How to Reset/Rescan/whatever?

I have the problem described here:
http://blogs.msdn.com/oldnewthing/archive/2005/05/26/422076.aspx

My Add or Remove Programs dialog appears normal (except for the miniscule
scrollbar thumb caused by this issue) until I scroll down the list as far as
Kinyonsoft's Win Tools XP, after which the list display is blank white for a
while, then vertical black bars for a while, then white again, and finally
the list takes back up with Lenovo Battery Program.

Then the list runs on normally until WinMerge Pro 2.2.2.0, at which point I
get the funky blank, then black bars, then blank again, before the list
finally picks back up with WordPerfect Lightning and runs normally to Zinio
Reader at the end.

I have opened the
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall path
and looked for DisplayIcon values of -1. Nada. Unfortunately, there is no
way to tell just by looking whether a non-numeric DisplayIcon value (e.g. a
program or DLL name) is valid or not.

Is there any way to force the system to reset/reread these values and
resolve this issue? Any other fixes anyone has come across? Thanks.

Cheers,
Scott


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