[Bug 115139] Dapper: no boot, mount of root partiton fails

[flix]

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After using Dapper for almost a year I suddenly was dropped to a shell (busybox) during boot while mounting the root filesystem.  On that shell I could mount the root partition by hand with
mount -t ext3 /dev/hda1 /root
and then resume the boot by Ctrl+D.
Then the next bootings were ok, today the same happened again.

I see no error in the related configuration files (/etc/fstab,
/boot/grub/menu.lst), fschk runs without complains. There were no
crashes or software installations / updates before the problem occured
the first time.

Full Information, including configuration files can be found at
http://ubuntuforums.org/showthread.php?t=443839

This problem seems to be related to the "Dapper: boot stalls after
update"-Bug, but the main difference is, that for me the Bug happend
after using Dapper for almost a year!

** Affects: linux-source-2.6.15 (Ubuntu)
     Importance: Medium
     Assignee: Ubuntu Kernel Team
         Status: Confirmed

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Dapper: no boot, mount of root partiton fails
https://bugs.launchpad.net/bugs/115139