Another place to scan for Registry cleanup

I was just doing a search in my Registry, and I discovered a small corner that CCleaner could clean:

HKEY_USERS\S-1-5-21-******\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\

It appears that Windows XP stores Application Compatibility settings here, (which it never seems to use anyways), and of course, if said program gets moved or deleted, the registry entry does not reflect that.

Actually, HKU\S-1-5-21-[lots of random numbers] is HKCU wink.gif