System crashes... what now?

[ImobachGonzález Sosa]

Hi all,

I'm a newbie in the FreeBSD thing, and I'm having some problems that I'd like 
to track down as far as possible. In four days using FreeBSD, my machine has 
crashed two times, ugh!

a) first time, with 5.3-RELEASE. Nothing changed about the kernel or base 
system. Just I leave the system alone compiling some stuff (like X.org) all 
night and, next day, the system has been crashed: no video output and no 
response to keyboard nor network.

b) the second one, this morning with 5.3-STABLE. It was downloading libxslt 
and, at 13 percent, the system went frozen.

My question is: after the system has crashed, what can I do? I mean, where can 
I look for clues about what happened? Log files shows nothing about the 
incidents, and I'd like to have a clue about what's wrong with FreeBSD and my 
machine.

Ideas?

Thank you in advance.

-- 
Imobach González Sosa
imobachgs en banot punto net
osoh en jabber.org