weird restarts when compiling

[Aggelidis Nikos]

Hi to all the list, i 've been using FreeBSD for almost a month ,and i
have this weird problem. Sometimes when i try to compile a program the
computer will hard-reset itself, like someone pulled of the plug...
For example yesterday i was trying to install jdk1.6 + eclipse, and
while i was compiling eclipse {more precisely -if i remember
correctly-  the "diablo-jdk" needed for eclipse} the computer rebooted
itself.

The load of the computer was: 2-3xterms, 1 Konversation irc client
,several opera9.51 windows, 1-2 konqueror windows, and 1-2 Firefox
widows. I have a dual core box with 2GB of memory and i use freebsd7
32bit. The computer was online for 8hours with almost the same load
{minus the compilation-procedure}.

* Has anyone had problems like this?
* What can i do to investigate a bit more what was the situation
before the restart?
* Is there anyway to solve this problem.


thanks for your help,
nikos

PS: i could blame the power company but the above problem has happened
before{several times} when i tried to compile "big" programs like
firefox or do a pkgdb -Fu, so i don't think it is this.