You can fix this problem by going to
HKEY_CLASSES_ROOT\SystemFileAssociations\.avi\shellex\PropertyHandler
and delete the "Default" value "{87D62D94-71B3-4b9a-9489-5FE6850DC73E}"
This should stop explorer chasing its tail... if you
use alot of AVI files remove key
HKEY_LOCAL_MACHINESOFTWAREClassesCLSID{87D62D94-71B3-4b9a-9489-5FE6850DC73E}
InProcServer32, this will stop Explorer from loading shmedia.dll. you will
find Explorer CPU time drop down to about 0 !
MM.
