I just noticed pkg_add.core on two of my machines, one running -current 
and one running 1.6.1.  Has anyone else seen that?  Here's a backtrace 
of the 1.6.1 dump:

#0  0x480ec7d3 in kill () from /usr/lib/libc.so.12
#1  0x480ec120 in abort () from /usr/lib/libc.so.12
#2  0x480a9f3e in __assert13 () from /usr/lib/libc.so.12
#3  0x804b626 in pkg_do ()
#4  0x804b762 in pkg_perform ()
#5  0x8049fb0 in main ()
#6  0x8049a80 in ___start ()


		--Steve Bellovin, http://www.research.att.com/~smb (me)
		http://www.wilyhacker.com (2nd edition of "Firewalls" book)