Thanks Leo : i had already tried the things explained there :
No specific files or folders … they can contain pictures or music or whatever else
No alcohol, disabled Use Shell Image extraction, disabled all viewers plugins
But then i have read this one :
[General slowdown or instability investigation steps)
Thumbnail caching have been purged and disabled
I had no mapped/network drive
I have turned on Generic icons for all folders
When i have done that, it worked better : the problem would not occur on all folders… still strange …
But then i tried W0lfdale’s suggestion [Slow response on all listers)
and found Mozy was the bad one … it seems the new version of Mozy Backup is trying to check each file of each folder to tell if it has been backed up or not by changing the icon … quite mad idea because it’s very slow !
I have disabled it and it works real fine … In Mozy, you need to check “Disable icon overlay in explorer”
Thanks for your FAQ Leo !