Areca 1280ML ccb command time out

Hi,

after upgrading vom FBSD8.2 to todays current, I have the problem that my
two Areca controllers don't find any disks. In dmesg there are a lot of
messages like:
arcmsr0: scsi id 2 lun 0 cmd=0x12 srb='0xffffff83e298f000' ccb command time
out!

The whole dmesg can be found here:
http://ugrohnwaldt.web02.lando.us/FBSD/dmesg-2011-08-24.log.txt 

I found no similar problems on the list. So anybody have an idea where to
start with this problem?

Best regards,
Uwe