Found a nice little networking tool

This tool determines where "lag" originates for those of you with realtime networking games:

http://www.endlagnow.org/ELN/TakeAction_LagMeter.aspx

I don't know how yet, but I'm sure there's a way to bundle both this app and your game to run at the same time, so if lag occurs, the user could look at the log to see where it's coming from. I'm sure this will help developers support their game and such.