FreeBSD / KDE locking up solid

[Stone Gecko]

Does anyone have any problems with KDE 3.1.2 or 3.1.3 running under BSD 5.1 
Release?

My system randomly locks solid. No mouse/keyboard/ssh/telnet/sound
Once it locks, the only thing i can do is a hard reboot.

I went back to 4.8 and it worked fine with KDE 3.1.3.

Is there any log files or programs that i can run to find out what is causing 
it. 

Any help would be appreciated.

ps.
its a AMD 1GHz Tbird on an MSI k7t 266 pro2 board with a GF4mx440 video