Not sure if this is old news or not, but we are having some users failing MS07-050 (938127) when using the Cisco pr_ checks because Microsoft changed the path of the registry key when they updated the hotfix:
Cisco pc_ looks for: [\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP0\KB938127-IE7\Filelist\ exists ] But Microsoft has pointed their version 2 of the hotfix to: \HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\Windows XP\SP0\KB938127-v2-IE7\Filelist\
