SCSI cd errors

I upgraded my PC yesterday and have experienced "hangs" in boot. It seems
like something has changed in the SCSI or GEOM code. I have an Advansys SCSI
controller with two plextor CD drivers attached as well as a HP scanner.
When the CD drives are detected the system hangs. Booting with verbose output
shows errors and timeouts.

The errors:

(probe2:adv0:0:2:0): Retrying Command
(probe2:adv0:0:2:0): error 22
(probe2:adv0:0:2:0): Unretryable Error
(probe4:adv0:0:4:0): error 22
(probe4:adv0:0:4:0): Unretryable Error
(probe6:adv0:0:6:0): error 22
(probe6:adv0:0:6:0): Unretryable Error
GEOM: create disk cd0 dp=0xc68d9e00
GEOM: create disk cd1 dp=0xc6916e00
pass0 at adv0 bus 0 target 2 lun 0
pass0: <HP C7670A 3925> Fixed Processor SCSI-2 device 
pass0: 3.300MB/s transfers
pass1 at adv0 bus 0 target 4 lun 0
pass1: <PLEXTOR CD-R   PX-W1210S 1.00> Removable CD-ROM SCSI-2 device 
pass1: 10.000MB/s transfers (10.000MHz, offset 15)
pass2 at adv0 bus 0 target 6 lun 0
pass2: <PLEXTOR CD-ROM PX-32TS 1.02> Removable CD-ROM SCSI-2 device 
pass2: 10.000MB/s transfers (10.000MHz, offset 15)
pass0 at adv0 bus 0 target 2 lun 0
pass0: <HP C7670A 3925> Fixed Processor SCSI-2 device 
pass0: 3.300MB/s transfers
GEOM: new disk cd0
GEOM: new disk cd1
SMP: AP CPU #1 Launched!
SMP: CPU1 ap_init():
     lint0: 0x00010700 lint1: 0x00010400 TPR: 0x00000000 SVR: 0x000001ff
(cd0:adv0:0:4:0): Retrying Command
(cd1:adv0:0:6:0): Retrying Command
(cd0:adv0:0:4:0): error 6
(cd0:adv0:0:4:0): Unretryable Error
cd0 at adv0 bus 0 target 4 lun 0
cd0: <PLEXTOR CD-R   PX-W1210S 1.00> Removable CD-ROM SCSI-2 device 
cd0: 10.000MB/s transfers (10.000MHz, offset 15)
cd0: Attempt to query device size failed: NOT READY, Medium not present -
tray closed
(cd1:adv0:0:6:0): error 6
(cd1:adv0:0:6:0): Unretryable Error
cd1 at adv0 bus 0 target 6 lun 0
cd1: <PLEXTOR CD-ROM PX-32TS 1.02> Removable CD-ROM SCSI-2 device 
cd1: 10.000MB/s transfers (10.000MHz, offset 15)
cd1: Attempt to query device size failed: NOT READY, Medium not present
(cd0:adv0:0:4:0): error 6
(cd0:adv0:0:4:0): Unretryable Error
(cd0:adv0:0:4:0): error 6
(cd0:adv0:0:4:0): Unretryable Error
(cd1:adv0:0:6:0): error 6
(cd1:adv0:0:6:0): Unretryable Error
(cd1:adv0:0:6:0): error 6
(cd1:adv0:0:6:0): Unretryable Error

It hangs after announcing it has launched CPU #1 when it prints:
(cd0:adv0:0:4:0): Retrying Command

uname -an
FreeBSD enzo.home.xbsd.net 5.1-CURRENT FreeBSD 5.1-CURRENT #0: Tue Oct 21
21:39:57 CEST 2003     root_at_enzo.home.xbsd.net:/usr/obj/usr/src/sys/ENZO i386

Full dmesg attached.

If any other info is needed please ask.

Sven Esbjerg