cdrom troubles

[Ben Cornett <acornet_(_at_)_emory_(_dot_)_edu>]

I've got a Mitsumi Model No. CRMC-FX320M2 cdrom drive which seems to be
misbehaving under oBSD.  I had previously used it successfully under
linux.  Here are the error messages I am receiving:

acd0(wdc:1):medium error, command: 28 0 0 4 11 c7 0 0 1 0 0 0
and 
wdc0(atapibus): lost interrupt

This seems to occur when I'm cping a lot of files from the cdrom (ie.
when I tried to copy the kernel source to disk).  I'm using an official
2.5 cdrom, currently running the GENERIC kernel.

Does anyone have any idea what the problem is?  Any help would be much
appreciated.
Thanks.

best,


Ben