It doesn't happen everytime, but it is when I mount the drive. Sometimes whilst it's mounting the hang will occur other times it could be running for a few hours and hang. I've been using this machine and have had it running 100 days without a problem until I start using USB media. I had this same problem on other FreeBSD machines.
The problem does not happen if I just plugin the drive and leave it there unmounted.
Here is what I get in my dmesg when I connect the drive, pretty standard output:
Code:
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <ST310003 40AS > Fixed Direct Access SCSI-2 device
da0: 40.000MB/s transfers
da0: 953869MB (1953525168 512 byte sectors: 255H 63S/T 121601C)
I tried a few times under the first terminal, but could not make it fail.
Also if I mount a USB drive, then remove it without umounting (which I know is wrong), this hangs the computer under FreeBSD but this doesn't happen on Debian is there a reason for this?
It seems the only stability problems I have with FreeBSD all come down to the USB devices on my machines.