Diagnosing program crashes.

[Ben Washington-Yule]

I have just destroyed a keyboard over this utterly frustrating problem; 
Evolution, (usr/ports/mail/evolution) crashes only about 1-2 minutes of 
use and by crash I mean that it crashes the entire system; screen 
freezes, keyboard locks up, have to flick switch off at back of 
computer. These crashes are not occasional; they happen after Evolution 
has been open for 1-2 minutes without fail. I have had this same problem 
with opera and linux-opera before but I pretended it just "didn't 
happen" and quickly deinstalled the ports (I was convinced it was 
impossible to crash FreeBSD - now I relise FreeBSD wasn't at fault - it 
was the programs in question).

I need to know where to start looking to diagnose this problem; I don't 
expect anyone will be able to say exactly what is causing the problem as 
it could be anything I suppose but I would like some pointers on what to 
do to try and solve the problem myself. There are no *.core files or any 
sign that the app has crashed after a reboot and thus I am completely 
clueless as to where to start looking for signs thereof.

Many thanks for any help or pointers in general,
- Ben