Strange SCSI error in /var/log/messages

From: Keegan Alex (keeganalex_at_yahoo.com)
Date: 07/31/03 

Date: 30 Jul 2003 20:44:00 -0700

Hi folks,

Question... in analyzing my /var/log/messages, I noticed the following
error repeating quite often:

Jul 18 16:31:27 trs-80 kernel: sr0: CDROM (ioctl) error, command: Read
TOC 00 00 00 00 00 00 00 0c 40
Jul 18 16:31:27 trs-80 kernel: Current sr00:00: sense key Medium Error
Jul 18 16:31:27 trs-80 kernel: Additional sense indicates No seek
complete
Jul 18 16:31:29 trs-80 kernel: SCSI error: host 0 id 0 lun 0 return
code = 28000000
Jul 18 16:31:29 trs-80 kernel: ^ISense class 7, sense error 0,
extended sense 3

It repeats almost constantly. My first guess was a bad CD-ROM, but I
haven't had a CD-ROM in my drive in quite a while. I checked my
mounted points, and no ISO's are mounted. Also, I tried to locate
sr0, but I'm not sure where this is. It's not showing up in
/proc/scsi/scsi. What am I missing???

Thanks,

Keegan.