Odd Error re: multiple simultaneous updates

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Does anyone have a sense of what I might do to correct this? Nothing
about this seems particularly wrong:

2011-12-06 16:27:11 RRD error updating
/opt/xymon-4.2.3/data/rrd/<hostname>.umdnj.edu/ifstat.mac.rrd from
192.168.20.40: illegal attempt to update using time 1323206831 when last
update time is 1323206831 (minimum one second step)

<hostname> can be apparently any one of my machines running Solaris 10
from the looks of it.

Thanks for any tips.

- -- 
- ---- _  _ _  _ ___  _  _  _
|Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Sr. Systems Programmer
|$&| |__| |  | |__/ | \| _| |user-ae4522577e16@xymon.invalid - 973/972.0922 (2-0922)
\__/ Univ. of Med. and Dent.|IST/CST-Academic Svcs. - ADMC 450, Newark
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