Time on amd64

[Cyrus Lopez]

I have a machine with a sempron64 and it seems that time is a tad bit too  
fast. Every minute it skips ahead about 15-20 seconds. After about 10  
minutes it's several minutes ahead of the real time. For now I've set a  
cron job to rdate time.nist.gov every 5 minutes. This is on OpenBSD 3.8  
with the generic kernel and no other special modifications. Is there  
anything I can possibly do to fix this little glitch (perhaps something  
via sysctl?) or is it a problem in the code somewhere? Any help would be  
greatly appreciated, thanks.

- Cyrus