This does not look very healthy:
[ 4141.585583] FAT: Filesystem error (dev sdb)
[ 4141.585588] invalid access to FAT (entry 0x0d905800)
[ 4141.585593] File system has been set read-only
Can you please run System - Admin - Manage Drives and Media, select
the iLiad, and do a file system
** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/32095357/BootDmesg.txt
** Attachment added: CurrentDmesg.txt
http://launchpadlibrarian.net/32095358/CurrentDmesg.txt
** Attachment added: DKDisksMonitorLog.txt
http://launchpadlibrarian.net/32095359/DKDisksMonitorLog.txt
