I've been dumped into the debugger about once a week because of
messages like:

Jul  6 10:01:05 monolith /netbsd: NMI ... going to debugger

As I almost exclusively use X and have ddb.onpanic=0, I thought
the machine had gone into a deep hang and would reboot.  I discovered
this morning that it's in the debugger and could be resumed, and
found the above message in /var/log/messages.

Is there anything I can do to get a trace?  Or rather, to dump the
trace to a useful spot to look at later?

Brian.

-- 
  Brian de Alwis | Software Practices Lab | UBC | http://www.cs.ubc.ca/~bsd/
      "Amusement to an observing mind is study." - Benjamin Disraeli