On Thursday, September 27, 2012 10:52:26 PM Albretch Mueller wrote: > $ date; fdisk -l; date > Thu Sep 27 22:48:21 UTC 2012 > ... > Thu Sep 27 22:48:59 UTC 2012 Failing boot sector? Some other sector it has to read is failing? Check the logs. Try (from smartmontools): smartctl -A /dev/sda | egrep -i "sector|realloc"