Burncd crash

[Dmitry]

	Hi all.
I have a nasty problem.
Then I try to burn a media on my atapi cdrw i get the following:

$ burncd blank									// Everything is OK
$ burncd data someImage fixate

acd0: unknown transfer phase
acd0: FAILTURE - ATAPI_IDENTIFY no interrupt
acd0: timeout sending command = a1
acd0: error issueing PIO command

Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x6a
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc043217e
stack pointer = 0x10:0xd865fc0c
frame pointer = 0x10:0xd865fc0c
code segment = base 0x0, limit 0fffff, type 0x16
	DPL 0, pres 1, def 32, gran 1
processor efalgs = interrupt enabled, OIPL = 0
current process = 5(task queue)
kernel: type 12 trap, code = 0
stopped at ata_pmode +0x6: testb $0x2, 0x6a(%edx)
db>



I transcribed the above message after cvsupping and installing of FreeBSD 
current at 13.03.2004
but roughly the same ones were generated earlier in 5.2.
In FreeBSD 4.9 i got some messages about inappropriate IOCTLs
(don't remember exactly) while fixating, but system survived them and 
burned medium was readable.

I have the machine with
Celeron 2.3 GHz, Gigabyte GA-8PE667 motherboard, 512mb DDR266 RAM,
Mitsumi CD-RW burner (48x/24x/48x) - probed as acd0:CDRW <CR-48XETE> at 
ata1 master UDMA33

I've attached output of dmesg.

Please tell me what's wrong.
I've tired booting Windows and using Nero when i need to burn something.

	Dmitry