https://bugs.launchpad.net/ubuntu/+bug/460831 may be a duplicate of this occouring on WD (Western Digital) drive (My Book Essential Edition 2.0 WD10000H1U-00)
https:/ /bugs.launchpad .net/ubuntu/ +bug/460831 may be a duplicate of this occouring on WD (Western Digital) drive (My Book Essential Edition 2.0 WD10000H1U-00)