Clock problems

[Dark-MiXer]

Hello,

Im having problems with the clock on my FreeBSD 5.1-Release, and as a newbie in that area I dont have a clue on what could be wrong.

The problem is, that it count too fast. It seem like it's counting 2 times the speed it should.

The FreeBSD is running on an old Gigabyte GA-5AX motherboard with a AMD K6-400 processor.
Motherboard settings:
CPU    100Hz
AGP    66Hz

Hope you can give me some hints on what might be done to get the clock back to normal.
I forgot to mention that it have been like this since I installed it.

Thanks in advance
Lars aka Dark-MiXer