freebsd stable - Dec 2005 - 6-stable doesn't recognize detatchment of CD-Rom

I don't know into which list this belongs, so I'm posting it to mobile
and stable.

I've got a Thinkpad-R40, a first generation Centrino system. When I
detach the CD-Rom drive nothing is shown on dmesg. The same when I
reenter it. No dmesg output.
When I try to mount a cd after detaching and reentering the drive the
system freezes.