Hello there!
CCleaner does not clean my VirtualDub MRU.
In an old thread I read that the registry entry for that is at 'HKEY_CURRENT_USER\Software\Freeware\VirtualDub\MRU List'
(http://forum.piriform.com/index.php?showtopic=3683&hl=virtualdub),
while the MRU of the recent version of VirtualDub is at 'HKEY_CURRENT_USER\Software\VirtualDub.org\VirtualDub\MRU List'.
If this is an error, could you please correct it?