FreeBSD 6.2 running on X86 hardware (FSC) shows a remarkable time drift

running ntpdate every half hour shows that the system looses about 10-14 sec 
each time.
15 May 10:06:48 ntpdate[7200]: step time server 192.53.103.108 offset 
-13.799602 sec
15 May 10:36:48 ntpdate[7515]: step time server 192.53.103.108 offset 
-12.813941 sec
15 May 11:06:48 ntpdate[7879]: step time server 192.53.103.108 offset 
-13.651921 sec
15 May 11:36:50 ntpdate[8079]: step time server 192.53.103.108 offset 
-11.109298 sec
15 May 12:06:50 ntpdate[8289]: step time server 192.53.103.108 offset 
-11.836499 sec


FreeBSD 7.0 on an otherwise almost identical system has a time drift of a few 
millisecs
every half hour.
15 May 10:35:00 ntpdate[7999]: adjust time server 192.53.103.108 offset 
0.009963 sec
15 May 10:35:51 ntpdate[8007]: adjust time server 192.53.103.108 offset 
-0.004890 sec
15 May 10:50:00 ntpdate[8042]: adjust time server 192.53.103.108 offset 
0.010734 sec
15 May 11:05:00 ntpdate[8088]: adjust time server 192.53.103.108 offset 
0.004523 sec
15 May 11:20:01 ntpdate[8114]: adjust time server 192.53.103.108 offset 
0.005800 sec

The 6.2 system is a production system, has a uptime of almost 300 days and I 
don't want 
to experiment a lot with acpi, battery or so. 

What would be your suspicion on the large time drift of the FreeBSD 6.2 system?

-- 
Volker Jahns, [EMAIL PROTECTED]
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