Are you running games fron internal or external?
When I first started using it had alot of stability issues till I moved all my games and thumbnails (hard copy, not the inviisible auto-update ones) to my external Harddrive.
Now it's normally only when trying to get certain new games or cores...
awesome !!!
If anyone can get Quarantine working properly... would love to know how.. demo works pretty easy, took a few attempts to get demo sound working and driving smooth, but full version freezes at "prss any key to continue" (as your aout to drive)