My SS10 has been running 1.5.1 for a while without problems.  Today it was 
sitting at the single-user boot prompt after apparently panicing during the 
night.

How can I figure out what happened?  Looking at /var/crash shows netbsd.0 
and netbsd.0.core.Z

I copied them to a directory with more space, uncompressed the core file 
and ran gdb netbsd.0 netbsd.0.core but gdb didn't recognize the core file....

drwxr-xr-x  2 grunzasr  staff       512 Feb  5 09:24 grunzasr/
-rw-r--r--  1 root      wheel   2821663 Mar  7 09:36 netbsd.0
-rw-r--r--  1 root      wheel  66363928 Mar  7 09:23 netbsd.0.core
grunza@hw-sbus 27% gdb netbsd.0 netbsd.0.core
GNU gdb 4.17
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "sparc--netbsd"...(no debugging symbols found)...

"/usr/export/home/netbsd.0.core" is not a core dump: File format not recognized


Any ideas?