Problem shutting down / reboot after upgrade

[Chin Shi Hong]

To the developers,

Although I am not the subscriber of the development mailing list yet. But, I
am having problem shutting down / restarting Ubuntu after upgrading from
Ubuntu 9.04 to Ubuntu 9.10.

You may read my post at http://ubuntuforums.org/showthread.php?t=1308731 .

I installed Ubuntu 9.04 through *Wubi*, then upgraded to Ubuntu 9.10 by
using update manager in Ubuntu.

After that, when I try to shut down or restart Ubuntu, I get the following
error message:

"[ xxx.xxxxxx] buffer I/O error on device loop0, logical block xxxxxx".

I have not reported this bug at https://launchpad.net/ubuntu/+bugs yet.
Should I report this bug, please do not feel hesitate to tell me.

Any action in solving the problem will be appreciated.

Regards,
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