I'm running into problems trying to shutdown on a IIci.  It used to work
fine until the whole thing locked up one day and I had to reboot via the
handy little button.  This is what I said and NetBSD's response:

# shutdown -h now                <-- I typed this
Shutdown NOW!
shutdown: [pid 602]
# mode = 0100644  inum = 1072, fs = /
panic:  ffs_valloc: dump alloc
Stopped at _Debugger+0x6: unlk a6

db> c                            <-- I typed "c"
syncing disks... 5 5 1 done
NetBSD/mac68k does not trust itself to update the RTC on shutdown.
dumping to dev 401 offset 34459
dump 1 2 3 4 5 6 7 8 9 10 11 12 13 14

..then it reboots.

Any ideas?