Ben, thank you for reply! Disk disconnects with 2.6.32-5-686 (stable) kernel and 2.6.38-bpo.2-686 (backports). Link to new bug report by running 'reportbug linux-image-2.6.32-5-686' and logs (#646081): http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=646081 Best regards, Entada.