I thought PAX drivers fixed this, but it didn't. I downloaded YouP-PAX-AXv3.63.03d. then I used creative speaker setting (SpkSet.exe) to test rear channels. Also I dont have hardware buffering. Is there any fix for this or should I start looking for a non creative product? Cant believe 64bit drivers get bugged out over 4gigs of ram when 64bit can address 4gigs of ram or more. I may give the X-FI a shot with the 4GB fixed drivers. I tried the 4.0 on my audigy 2 suprising got sound, but no rear channel.