I've been observing this bug in other kernel versions and other hardware configurations, so I think it's easily reproductible. Happens when I/O error on external ide <-> usb drives. Can be reproduced by unplugging the usb cable while accessing the drive, or with a faulty drive. I don't think my real u2w scsi controllers would like the real scsi disks being hot swapped, so I haven't tried there. Regards. -- Pedro Larroy Tovar | Linux & Network consultant | pedro%larroy.com Las patentes de programación son nocivas para la innovación http://proinnova.hispalinux.es/