DravidDavid: I have a major issue with the Global Gateway aswell. Take a look at the tests I did on the other page. It never seems to be able to ping the global gateway and when it does the latency is in the high thousands.
I think this is were my ping/packet loss issue is occuring.
It could be a lot of things really.
One posability is that its overloaded and that you are being routed around (hence your ping issue).
Also to add to whats above, lowering the ping packet size does seem to slighly decrease the number of time outs.