ntpd won't set clock

[Heinrich Rebehn <rebehn@ant.uni-bremen.de>]

Hi list,

I try to use ntpd from openntpd 3.6.1p1-2 to set the system clock, but 
it refuses to do so:

root@pchome [~] # ntpd -d -s
ntp engine ready
reply from 213.239.204.4: offset 3436.453723 delay 0.081319, next query 5s
reply from 213.239.201.102: offset 3436.457766 delay 0.087383, next query 5s
reply from 195.71.86.233: offset 3436.461693 delay 0.099266, next query 5s

[many lines snipped]

reply from 62.206.253.10: offset 3436.323719 delay 0.136268, next query 30s
reply from 82.139.244.162: offset 3436.479255 delay 0.160401, next query 30s
reply from 194.231.42.100: offset 3436.444999 delay 0.152332, next query 30s
adjusting local clock by 3436.456532s
adjtime failed: Invalid argument

Currently, the clock is almost one hour late. But specifiying '-s' 
should allow to set it anyway.

Any ideas? Googling and this ML did not bring up an answers.

--Heinrich