I am running sarge with the 2.6.8 kernel on a Dell Inspiron 1100 laptop.
I've got a usb cd/dvd rw drive. I have no problem plugging it in and using
it. But when I unplug it, the system freezes. It doesn't happen
immediately but after a minute or so. It's device file is /dev/scd0 and it
mounts at /media/cdrecorder. Here's the dmesg listing from when I plug it
in and after I unplug it (and before it freezes):

usb 4-3: new high speed USB device using address 4 scsi1 : SCSI emulation
for USB Mass Storage devices
Vendor: DVDRW Model: USB 16X Rev: A087 Type: CD-ROM
ANSI SCSI revision: 02
USB Mass Storage device found at 4
sr0: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray Attached
scsi CD-ROM sr0 at scsi1, channel 0, id 0, lun 0 Attached scsi generic sg0
at scsi1, channel 0, id 0, lun 0, type 5 ISO 9660 Extensions: Microsoft
Joliet Level 3 ISO 9660 Extensions: RRIP_1991A
usb 4-3: USB disconnect, address 4
scsi: Device offlined - not ready after error recovery: host 1 channel 0
id 0 lun 0 sr 1:0:0:0: Illegal state transition cancel->offline Badness in
scsi_device_set_state at drivers/scsi/scsi_lib.c:1643
[<d0e225ea>] scsi_device_set_state+0xc4/0xcf [scsi_mod] [<d0e2075d>]
scsi_eh_offline_sdevs+0x47/0x60 [scsi_mod] [<d0e20d3d>]
scsi_unjam_host+0x18d/0x1a2 [scsi_mod] [<d0e20e68>]
scsi_error_handler+0x116/0x15a [scsi_mod] [<d0e20d52>]
scsi_error_handler+0x0/0x15a [scsi_mod] [<c01041e1>]
kernel_thread_helper+0x5/0xb
Badness in kobject_get at lib/kobject.c:433
[<c018c93a>] kobject_get+0x2e/0x38
[<c01d3ecc>] get_device+0x13/0x1a
[<d0e21ebd>] scsi_request_fn+0x20/0x35b [scsi_mod] [<c01d8d2c>]
blk_insert_request+0x87/0xa9 [<d0e21155>] scsi_queue_insert+0x84/0x8e
[scsi_mod] [<d0e20b58>] scsi_eh_flush_done_q+0x7e/0xd6 [scsi_mod]
[<d0e20d4a>] scsi_unjam_host+0x19a/0x1a2 [scsi_mod] [<d0e20e68>]
scsi_error_handler+0x116/0x15a [scsi_mod] [<d0e20d52>]
scsi_error_handler+0x0/0x15a [scsi_mod] [<c01041e1>]
kernel_thread_helper+0x5/0xb
Unable to handle kernel paging request at virtual address 00100104
printing eip:
d0e23ceb
*pde = 06e15067
*pte = 00000000
Oops: 0002 [#1]
PREEMPT
Modules linked in: sg sr_mod nls_iso8859_1 nls_cp437 vfat fat sd_mod
usb_storage scsi_mod thermal fan button processor ac battery i830
parport_pc lp parport ipv6 isofs ds af_packet pcspkr snd_intel8x0m
snd_intel8x0 snd_ac97_codec snd_pcm snd_timer snd_page_alloc gameport
snd_mpu401_uart snd_rawmidi snd_seq_device snd pci_hotplug hw_random
intel_agp agpgart ehci_hcd usblp uhci_hcd usbcore i810_audio ac97_codec
soundcore b44 mii yenta_socket pcmcia_core tsdev mousedev joydev evdev
capability commoncap psmouse ide_cd cdrom genrtc ext3 jbd ide_generic piix
ide_disk ide_core unix font vesafb cfbcopyarea cfbimgblt cfbfillrect CPU:
0
EIP: 0060:[<d0e23ceb>] Not tainted EFLAGS: 00010002 (2.6.8-2-386)
EIP is at scsi_device_dev_release+0x2d/0xf9 [scsi_mod] eax: 00100100
ebx: cf406008 ecx: 00200200 edx: cf406184 esi: cf406000 edi:
00000286 ebp: cfb054b4 esp: c35efef0 ds: 007b es: 007b ss: 0068
Process scsi_eh_1 (pid: 26283, threadinfo=c35ee000 task=ce50a6c0) Stack:
cf4061a8 c02cbc08 c02cbc20 cfb054d8 c01d3c89 cf406184 c018c984 cf4061a8
c35ee000 ca7dcb00 cf406000 c286fe2c d0e221ed cf4061a8 cfb05400
cfb058b0 ca7dcb00 c286fe2c 00000202 c01d8d2c c286fe2c cf406000
ca7dcb00 cfb05400
Call Trace:
[<c01d3c89>] device_release+0x14/0x44 [<c018c984>]
kobject_cleanup+0x40/0x65 [<d0e221ed>] scsi_request_fn+0x350/0x35b
[scsi_mod] [<c01d8d2c>] blk_insert_request+0x87/0xa9 [<d0e21155>]
scsi_queue_insert+0x84/0x8e [scsi_mod] [<d0e20b58>]
scsi_eh_flush_done_q+0x7e/0xd6 [scsi_mod] [<d0e20d4a>]
scsi_unjam_host+0x19a/0x1a2 [scsi_mod] [<d0e20e68>]
scsi_error_handler+0x116/0x15a [scsi_mod] [<d0e20d52>]
scsi_error_handler+0x0/0x15a [scsi_mod] [<c01041e1>]
kernel_thread_helper+0x5/0xb
Code: 89 48 04 89 01 c7 43 04 00 02 20 00 8d 9a 8c fe ff ff 8b 4b
<6>note: scsi_eh_1[26283] exited with preempt_count 1
Badness in kobject_get at lib/kobject.c:433
[<c018c93a>] kobject_get+0x2e/0x38
[<c01d3ecc>] get_device+0x13/0x1a
[<d0e21ebd>] scsi_request_fn+0x20/0x35b [scsi_mod] [<c01d858e>]
__generic_unplug_device+0x2c/0x2f [<c01d85a7>]
generic_unplug_device+0x16/0x2a [<c01d85df>] blk_unplug_work+0xb/0xd
[<c0124c52>] worker_thread+0x19c/0x22a [<c01d85d4>]
blk_unplug_work+0x0/0xd
[<c01161b1>] default_wake_function+0x0/0x12 [<c01161b1>]
default_wake_function+0x0/0x12 [<c0124ab6>] worker_thread+0x0/0x22a
[<c0127b06>] kthread+0x6d/0x97
[<c0127a99>] kthread+0x0/0x97
[<c01041e1>] kernel_thread_helper+0x5/0xb
Unable to handle kernel paging request at virtual address 00100104
printing eip:
d0e23ceb
*pde = 06e15067
*pte = 00000000
Oops: 0002 [#2]
PREEMPT
Modules linked in: sg sr_mod nls_iso8859_1 nls_cp437 vfat fat sd_mod
usb_storage scsi_mod thermal fan button processor ac battery i830
parport_pc lp parport ipv6 isofs ds af_packet pcspkr snd_intel8x0m
snd_intel8x0 snd_ac97_codec snd_pcm snd_timer snd_page_alloc gameport
snd_mpu401_uart snd_rawmidi snd_seq_device snd pci_hotplug hw_random
intel_agp agpgart ehci_hcd usblp uhci_hcd usbcore i810_audio ac97_codec
soundcore b44 mii yenta_socket pcmcia_core tsdev mousedev joydev evdev
capability commoncap psmouse ide_cd cdrom genrtc ext3 jbd ide_generic piix
ide_disk ide_core unix font vesafb cfbcopyarea cfbimgblt cfbfillrect CPU:
0
EIP: 0060:[<d0e23ceb>] Not tainted EFLAGS: 00010002 (2.6.8-2-386)
EIP is at scsi_device_dev_release+0x2d/0xf9 [scsi_mod] eax: 00100100
ebx: cf406008 ecx: 00200200 edx: cf406184 esi: cf406000 edi:
00000286 ebp: cfb054b4 esp: cf4ebef8 ds: 007b es: 007b ss: 0068
Process kblockd/0 (pid: 33, threadinfo=cf4ea000 task=cf4e96f0) Stack:
cf4061a8 c02cbc08 c02cbc20 cfb054d8 c01d3c89 cf406184 c018c984 cf4061a8
cf4ea000 cf4ea000 cf406000 c286fe2c d0e221ed cf4061a8 cfb05400
c286fe2c cf4ea000 c286ff1c 00000293 c01d858e c286fe2c cf4ea000
c01d85a7 c286fe2c
Call Trace:
[<c01d3c89>] device_release+0x14/0x44 [<c018c984>]
kobject_cleanup+0x40/0x65 [<d0e221ed>] scsi_request_fn+0x350/0x35b
[scsi_mod] [<c01d858e>] __generic_unplug_device+0x2c/0x2f [<c01d85a7>]
generic_unplug_device+0x16/0x2a [<c01d85df>] blk_unplug_work+0xb/0xd
[<c0124c52>] worker_thread+0x19c/0x22a [<c01d85d4>]
blk_unplug_work+0x0/0xd
[<c01161b1>] default_wake_function+0x0/0x12 [<c01161b1>]
default_wake_function+0x0/0x12 [<c0124ab6>] worker_thread+0x0/0x22a
[<c0127b06>] kthread+0x6d/0x97
[<c0127a99>] kthread+0x0/0x97
[<c01041e1>] kernel_thread_helper+0x5/0xb
Code: 89 48 04 89 01 c7 43 04 00 02 20 00 8d 9a 8c fe ff ff 8b 4b
<6>note: kblockd/0[33] exited with preempt_count 1

Can someone help me figure out what's happening?