strange problem with hobbitping

Hi, i've seen than some host (in my network) has 60 msec of ping, other 
0.15 msec..
If i ping/fping/hobbitping manually i've the correct time but in hobbit 
the graph display 60 msec.
I've channged hobbitping with fping in hobbitserver.cfg and the showed 
value is correct: 0.15 msec..
Why?

-- 
Roberto Tagliaferri
Responsabile Progettazione & Produzione
TosNet s.r.l. - Internet Service Provider
user-ad26667b6a89@xymon.invalid
www.tosnet.it