Lets see if there's a big variation in the round trip time. Go to http://www.pingtest.net/ - when the map appears drag the circle in the lower over to the US. Roughly in the centre of the large map there's a star and hovering the pinter on that should show an option for a server in Denver, Colorado. Click on it to run a Ping/Jitter test. That server is josted by Comcast so ought to be on the pretty much the same network as the Foundry.
For comparison, here's my result:

I'm not too bothered about the ping time itself, but big numbers for jitter or packet loss could be significant.






