Hello all. I've been having problems when playing WoW from patch 3.1 when i play for a few hours in a raid mostly, Vent stops all sounds and i get a error of: Failed to open sound input device. Another program might have it open already. r = -1. (the r= - 1 not sure if its the right way round but it was somthing like that), i then have to reboot for it to go. i have updated sound drivers and video card ive even done a system restore, so now im at ends and getting anoyed please help! =D. thanks