After installing the sp2 beta3 I cannot get my external usb harddrive to work. If I follow the default route of installing/updating the drivers, the device disappears and if I try to do it manually, I end up with a BSOD at boot: (Invalid vxd dynamic link call from NTMAPHLP (02) + 00000002 to device "004f" service 1). I've got a drive image from the point before I installed the sp, so I can easily recreate the process if that helps resolve this.