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From: Frans Pop <elendil@planet.nl>
To: Gene Heskett <gene.heskett@gmail.com>
Subject: Re: removable media errors
Date: Fri, 26 Dec 2008 15:19:00 +0100
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> I thought this was fixed as I hadn't seen it for a couple of rc's, but
> its back.
>
> >From the log or logwatch:
>
>  WARNING:  Kernel Errors Present
>     [100771.466400] end_request: I/O error, dev fd0, sector ...:  1 Time(s)
>     [100771.647800] end_request: I/O error, dev sr0, sector ...:  1 Time(s) 
>     [100771.647806] Buffer I/O error on device sr0, l ...:  1 Time(s) 
>     [100771.647809] Buffer I/O error on device sr0, l ...:  1 Time(s)

Have you perhaps been using some kind of emulator or virtualization?
I've seen that causing similar errors.

Cheers,
FJP