unkillable process

[Joe Talbott <josepht@xxxxxxxxxx>]

I have a gtkpod process running that is unkillable.  Neither -QUIT or
-KILL help.  From top:

71889 root     152   0 18064K 14112K vfs_bu   0:08  0.00%  0.00%
gtkpod

uname:

 DragonFly 1.7.0-DEVELOPMENT #6: Fri Oct  6 10:53:26 EDT 2006     

Background:

gtkpod successfully unmounted /ipod and then hung.  I cannot kill it.
I believe vfs_bu in the STATE column of top may be a clue.  Ktrace
returns a size 0 ktrace.out file.

Thanks,
Joe