timed problems?

[Anthony Shipman]

 I have just set up three machines to run with synchronised clocks using
 /etc/timed. This works well and the times are within +- 1 sec. But 
 this means that the system time is fluctuating backwards and forwards by up to
 a second (in the steady state). The documentation I have warns that this might
 upset some programs that maintain an internal idea of the system time.

 What standard programs might be upset? Would cron be? Is there a danger of
 cron starting a job twice if the time jumps back 2 secs as the job starts? I
 remember someone on one of these news groups reporting a problem with cron
 starting a job twice sometimes.

 Does anyone have any experience they would like to impart?

 Thanks
-- 
Anthony Shipman                               ACSnet: als at bohra.cpg.oz.au
Computer Power Group
9th Flr, 616 St. Kilda Rd.,
St. Kilda, Melbourne, Australia
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