Worrying kernel messages

[Matthias Scheler <tron%zhadum.org.uk@localhost>]

        Hello,

my server produced a bunch of kernel messages like this yesterday:

cd0(piixide0:0:0):  Check Condition on CDB: 0x00 00 00 00 00 00
    SENSE KEY:  Not Ready
     ASC/ASCQ:  Medium Not Present - Tray Closed

tap0: Ethernet address f2:0b:a4:71:04:3a
tap0: detached

While I know what each of them mean I have no idea what triggered them.
I have definitely not configured a tap(4) device. I wonder whether
something (e.g. a "configure" script) does a weird kind of device
probe which triggers these kernel messages.

Has anybody else seen this?

        Kind regards

-- 
Matthias Scheler                                  http://zhadum.org.uk/