few programs now getting sig 6

Just rebuilt my system and I am now getting 2 programs that 
consistently core:

Feb 14 22:59:49 server kernel: pid 1096 (evolution-data-serv), uid 501: 
exited o
n signal 6

Feb 14 23:17:12 server kernel: pid 25042 (mDNSResponder), uid 0: exited 
on signa
l 6 (core dumped)

I've also seen a core dump on a recompile attempt for howl (port that 
has mDNSResponder).  It wasn't repeatable, so I thought my system had 
memory issues.  After some reboots and testing, I've found that the 
above aborts are consistent and not memory related.

Sean