ataraid panic

Dear all,

for over a month ataraid is now broken with the sil0680 chipset.
Since I thought that this controller isn't supported anyway (the 
BIOS-generated mirror isn't detected as /dev/ar?) I suspected that 
'atacontrol create RAID1 ad4 ad6' just does the same like with two disks 
connected to "non-raid" controllers (I'm aware that these cheap cards are not 
really RAID controllers!).
When I settle 'atacontrol create RAID1 ad0 ad1' with -current from 07/26 I get 
the following panic:

panic: duplicate free of item 0xc18ba800 from zone 0xc1435c60(2048)
cpuid = 0;
[thread 100032]
Stopped at kdb_enter+0x2b: nop
db> trace
kdb_enter(c07d2b72) at kdb_enter+0x2b
panic(c07ec3cd,c18ba800,c1435c60,c0796c10,c07ec3b1) at panic+0x131
uma_dbg_free(c1435c60,c17cbc58,c18ba800) at uma_zfree_arg+0xe9
free(c18ba800,c0806be0,c1848200,c7c1bc90,c0631df7) at free+0xcd
ar_rw_done(c1848200) at ar_rw_done+0x14
biodone(c1848200,c182aa8c,c7c1bcb4,c04b2a9e,c182aa8c) at biodone+0x57
ad_done(c182aa8c) at ad_done+0x2d
ata_completed(c182aa8c,c7c1bcd4,0,c07ce006,195) at ata_completed+0x3a2
g_io_schedule_up(c16c7dc0) at g_io_schedule_up+0x67
g_up_procbody(0,c7c1bd48,0,c05c397c,0) at fork_exit+0x98
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xc7c1bd7c, ebp = 0 ---
db>

The controller is the 440BX integrated INTEL PIIX4 UDMA33

Let me know if you need more info.

And please remove the cmd649 and sil0680 detection since these chips are not 
supported and getting users into big trouble.
Also HPT370 needs to be fixed or removed!

Thanks,

-Harry