NetBSD/hp300 1.2e + pieces of current <g>

I awoke this morning to find

panic: bad dir
Stopped at	_Debugger0x6: unlk	a6
db>

What does this mean, and how can I avoid it in the future?
I had just installed perl the night before, and everything
seemed to be working smoothly.

thanx,
	nate

[ Nathan Gelbard              || gelbard@engr.orst.edu           ] 
[ Oregon State University     || http://straylight.hurrah.com    ]
[ Student of Computer Science || Area Support Computer Assistant ]