After running for a while (a few days) xntpd starts to use a _lot_ of
resources, like this:
last pid: 1610624510;  load avera 2.27,  2.31,  2.30 2.31              04:38:23
45 processes:  3 running, 42 sleeping
CPU states: 80.1% user, 14.3% nice,  5.5% system,  0.0% interrupt,  0.0% idle
Memory: 9544K Act 4908K Inact 3640K Wired 704K Free 6% Swap

  PID USERNAME PRI NICE   SIZE   RES STATE   TIME   WCPU    CPU COMMAND
  665 root      46    8   260K  384K run   389:27 132.08% 132.08% xntpd
11791 nobody    52   25  1136K 1344K run     2:26 18.96% 18.96% sort
 9023 bsalai     2   24  3304K 2488K sleep  30:53  6.35%  6.35% Xmacbsd.960503
11809 bsalai    28   20   296K  692K run     0:01  5.07%  3.82% top
11801 bsalai    18   20   476K  752K sleep   0:02  0.00%  0.00% tcsh
10867 bsalai    18   20   476K  752K sleep   0:02  0.00%  0.00% <tcsh>

anyone else ever see anything like that, or have an idea how to prevent it.

I've been restarting xntpd from time to time as a workaround, but there must be
a better way.

Brad