CDROM (DVDROM) cd-rom problem

Hello. When I'm mounting and reading CD-ROMs, I get the following
error in the syslog:

Jun 20 23:23:28 jakob kernel: hdc: packet command error: status=0x51 [ drive ready,seek complete,error] 
Jun 20 23:23:28 jakob kernel: hdc: packet command error: error=0x50
Jun 20 23:23:28 jakob kernel: ATAPI device hdc:
Jun 20 23:23:28 jakob kernel:   Error: Illegal request -- (Sense key=0x05)
Jun 20 23:23:28 jakob kernel:   Invalid field in command packet -- (asc=0x24, ascq=0x00)
Jun 20 23:23:28 jakob kernel:   The failed "Request Sense" packet command was: 
Jun 20 23:23:28 jakob kernel:   "03 00 00 00 12 00 00 00 00 00 00 00 "
Jun 20 23:23:28 jakob kernel:   Error in command packet byte 8 bit 0
Jun 20 23:23:28 jakob kernel: VFS: Disk change detected on device ide1(22,0)
Jun 20 23:26:26 jakob kernel: hdc: packet command error: status=0x51 [ drive ready,seek complete,error] 
Jun 20 23:26:26 jakob kernel: hdc: packet command error: error=0x50
Jun 20 23:26:26 jakob kernel: ATAPI device hdc:
Jun 20 23:26:26 jakob kernel:   Error: Illegal request -- (Sense key=0x05)
Jun 20 23:26:26 jakob kernel:   Invalid field in command packet -- (asc=0x24, ascq=0x00)
Jun 20 23:26:26 jakob kernel:   The failed "Request Sense" packet command was: 
Jun 20 23:26:26 jakob kernel:   "03 00 00 00 12 00 00 00 00 00 00 00 "
Jun 20 23:26:26 jakob kernel:   Error in command packet byte 8 bit 0
Jun 20 23:26:26 jakob kernel: VFS: Disk change detected on device ide1(22,0)
Jun 20 23:27:00 jakob kernel: hdc: packet command error: status=0x51 [ drive ready,seek complete,error] 
Jun 20 23:27:00 jakob kernel: hdc: packet command error: error=0x50
Jun 20 23:27:00 jakob kernel: ATAPI device hdc:
Jun 20 23:27:00 jakob kernel:   Error: Illegal request -- (Sense key=0x05)
Jun 20 23:27:00 jakob kernel:   Invalid field in command packet -- (asc=0x24, ascq=0x00)
Jun 20 23:27:00 jakob kernel:   The failed "Request Sense" packet command was: 
Jun 20 23:27:00 jakob kernel:   "03 00 00 00 12 00 00 00 00 00 00 00 "
Jun 20 23:27:00 jakob kernel:   Error in command packet byte 8 bit 0
Jun 20 23:27:00 jakob kernel: VFS: Disk change detected on device ide1(22,0)

On booting, I get the following:
hdc: TOSHIBA DVD-ROM SD-M1102, ATAPI CD/DVD-ROM drive
[...]
hdc: ATAPI 24X DVD-ROM drive, 256kB Cache, DMA
Uniform CD-ROM driver Revision: 3.12
hdc: packet command error: status=0x51 [ drive ready,seek complete,error]
hdc: packet command error: error=0x50
ATAPI device hdc:
Error: Illegal request -- (Sense key=0x05)
Invalid field in command packet -- (asc=0x24, ascq=0x00) The failed "Request Sense" packet command was:
"03 00 00 00 12 00 00 00 00 00 00 00 "
Error in command packet byte 8 bit 0

Anyone know what's going on with this?
Kernel is 2.5.24; it built beautifully for me.
Thanks!

-Joseph

Joseph======================================================jap3003@ksu.edu
"[...]this, they say, cost about $40 too much, and about 20,000 Iowans 
 bought [Windows] 98.  Which gives us a tab of $800,000, i.e. the
 equivalent of a rounding error in Redmond's vast war chest." -The Register

It's hard to say what the problem is, because sense reporting is still broken in 2.5. Notice how it's reporting a packet command error, but the cdb dumped is the request sense command itself..

Jens Axboe