Disk error problem

[Larry Fletcher <de-41@extra.lafn.org>]

Can someone tell me what is causing the following errors?

Sep 24 21:53:32 localhost kernel: hda: dma_intr: status=0x51 
    { DriveReady SeekComplete Error }
Sep 24 21:53:32 localhost kernel: hda: dma_intr: error=0x40
    { UncorrectableError }, LBAsect=22581489, sector=1825392
Sep 24 21:53:32 localhost kernel: end_request: I/O error,
    dev 03:06 (hda), sector 1825392
Sep 24 21:53:34 localhost kernel: hda: dma_intr: status=0x51
    { DriveReady SeekComplete Error }
Sep 24 21:53:34 localhost kernel: hda: dma_intr: error=0x40
    { UncorrectableError }, LBAsect=22581489, sector=1825400
[...]

I installed a new drive a few weeks ago, so I'm thinking that might be
the cause?

This is the second time it's happened today.  The first time I lost the
partition and I'll probably lose this one, but I have backups on a
second drive.  My cdrom also died a couple of days ago, so things seem
to be going from bad to worse.

    Larry