I said earlier that the hard disk freezes I was experiencing stopped
whenever a readable disk was in the optical drive, and indeed I didn't
notice any for several days, but just now I definitely had a freeze
with a CD in the drive. The dmesg looks indistinguishable to me, but
then I'm not a kernel hacker.

Should I open a bug about this, or talk to the HAL people, or what?

dmesg and lspci -vvx attached

Keenan Pepper