Conn time discrepancy

I've searched the archives and didn't find anything, I'm hoping someone here has some insight.

Occasionally we'll notice some drastic change in the graphing on Xymon for the conn times, and when I bring these up with the networking folks they basically dismiss it because the labels on the side of the scale are "wrong". What I'm seeing is that the Y axis is being labeled as "Seconds" with the "m" after the scale, and it reports around 40-80mS for ping times. This isn't what we're seeing from the box itself though when we execute the same hobbitping :