ping times difference

Hi!

I am using Xymon 4.3.0 beta2 and observing an phenomenon which is not
clear to me: If I ping a host on the machine the hobbit server is
running on, I get ping times of 9ms (constantly). 
  When I watch the hobbit conn page of this host, it reports 60ms
response time (this value us also shown in the rrd graph) -- but the
ping is done from the same host than the manual one.

Could somebody explain me where the different ping times come from?

Thomas