The first thing anyone and EVERYONE should do is run PingPlotter to the servers as soon as they have an issue. Unless 90% of the arena gets dumped the odds are pretty good it has nothing to do with the game, and is just a burp in the internet some where between you and the game servers.
Also, seeing as we are closing in on Christmas there is going to be a big increase in the use of the internet as Santa is hunting for the best prices on gifts this year. Increased traffic WILL cause an increase in trouble, expect it!