AVAST5 scan all JPG files; if disable AVAST; AVAST scan allways JPG files!!!
very big problem, can't disable this scan! if exclude folder, not work... problem sended to french AVAST support but
I use SyncToy to make backup (sync with echo) of all jpg files!!
With AVAST (not another AV) after 1 hours, not finish, and use more CPU! (same with Avast disabled, in monitor, can see all files scanned, and counter file scanned increase!!)
With Microsoft Essential (after uninstall AVAST,reboot, install MSE,reboot), less than 5 minutes!
(I use only one AV)