Hi Ian, > Is there any chance of you posting your kernel source for the 2.6.19 > amd64 train? Just to follow up what Free said, 2.6.19 has a serious bug affecting USB audio devices, so if you have one of those, I'd say use 2.6.20.1 or later. See: http://lkml.org/lkml/2007/3/7/330 Cheers! Daniel