I upgraded my userland and practically nothing worked anymore.  Luckily I
had a previous version of libc still hanging around and reverting it
made the system work better again.

Appears the crash is in jemalloc, e.g.:
Core was generated by `find'.
Program terminated with signal 11, Segmentation fault.
#0  0xbbb4556a in _malloc_prefork () from /objs/obj/destdir.i386/lib/libc.so.12

Anyone got a clue as to what is going on?  I tried installing the 20071020
snapshot on my barely limping system with a GENERIC to match but it had
exactly the same effect.

-- 
Antti Kantee <pooka@iki.fi>                     Of course he runs NetBSD
http://www.iki.fi/pooka/                          http://www.NetBSD.org/
    "la qualité la plus indispensable du cuisinier est l'exactitude"