reboot sometimes freezes, adaptic scsi card possible problem

On reboot, one out of 10 times, reboot (from hardware initialization) stops.

Referring to this portion of the dmesg -v output, of a successful boot,
where i have marked ">>>HERE<<<" is where the boot freezes on an
unsuccessful boot. This is a constnat problem, on 6.2 as well as 6.3
unchanged.

ata0-master: pio=PIO4 wdma=WDMA2 udma=UDMA33 cable=40 wire
acd0: setting PIO4 on 63XXESB2 chip
acd0: setting UDMA33 on 63XXESB2 chip
acd0: <TSSTcorpCD-RW/DVD-ROM TSL462D/DE01> CDRW drive at ata0 as master
acd0: read 4134KB/s (4134KB/s) write 4134KB/s (4134KB/s), 1536KB buffer,
UDMA33
acd0: Reads: CDR, CDRW, CDDA stream, DVDROM, DVDR, packet
acd0: Writes: CDR, CDRW, test write, burnproof
acd0: Audio: play, 256 volume levels
acd0: Mechanism: ejectable tray, unlocked
acd0: Medium: no/blank disc
mfid0: <MFI Logical Disk> on mfi0
mfid0: 139392MB (285474816 sectors) RAID volume '' is optimal
GEOM: new disk mfid0
mfi0: 3796 (270874608s/0x0008/0) - Battery temperature is normal
mfi0: 3797 (270874608s/0x0008/0) - Battery started charging
mfi0: 3798 (270874608s/0x0008/0) - Current capacity of the battery is above
threshold
HERE<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
ahd0: Selection Timeout on A:10. 0 SCBs aborted
ahd1: Selection Timeout on A:0. 0 SCBs aborted
ahd0: Selection Timeout on A:11. 0 SCBs aborted
ahd1: Selection Timeout on A:1. 0 SCBs aborted
ahd0: Selection Timeout on A:0. 0 SCBs aborted
ahd1: Selection Timeout on A:10. 0 SCBs aborted
ahd0: Selection Timeout on A:1. 0 SCBs aborted
ahd1: Selection Timeout on A:11. 0 SCBs aborted
ahd0: Selection Timeout on A:2. 0 SCBs aborted
ahd1: Selection Timeout on A:12. 0 SCBs aborted
ahd0: Selection Timeout on A:3. 0 SCBs aborted


I have enclose various files with my hardware profile.

[burt@mcclellan ~]$ uname -a
FreeBSD mcclellan.cs.miami.edu 6.3-RELEASE-p3 FreeBSD 6.3-RELEASE-p3 #8: Wed
Jul 30 13:02:03 EDT 2008
burt@xxxxxxxxxxxxxxxxxxxxxx:/usr/obj/usr/src/sys/MCCLELLAN
amd64

Dell PowerEdge 2950;

ahd0@pci15:3:0: class=0x010000 card=0x00409005 chip=0x80169005 rev=0x10
hdr=0x00
vendor = 'Adaptec Inc'
device = 'ASC-39320A Ultra320 SCSI Controller'
class = mass storage
subclass = SCSI

scbus0 on ahd0 bus 0:
<SEAGATE DAT DAT72-052 A16E> at scbus0 target 6 lun 0 (sa0,pass0)
< > at scbus0 target -1 lun -1 ()
scbus1 on ahd1 bus 0:
< > at scbus1 target -1 lun -1 ()
scbus-1 on xpt0 bus 0:
< > at scbus-1 target -1 lun -1 (xpt0)


Thanks.

Attachment: camcontrol_devlist.out
Description: Binary data

Attachment: dmesg.out
Description: Binary data

Attachment: dmidecode.out
Description: Binary data

Attachment: pciconf_-l_-i.out
Description: Binary data

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