matt,

the arena sync error occurs when more than one person click on the same player at the same time fighting for the same stake, and errors out because it didn't redirect you to the fight the person who "just took" the stakes.
latency between players and the server varies greatly, a little lag and you can fight your own guild mate on the shores of the Caribbean and take their map that they just looted. we have all lost runes while praying and getting the sync errors. but getting disconnected in the middle of the game isn't necessarily a server issue. it could be caused by heavy lag (ping timeout). Im not a developer or anything, but I sure get to see a lot of strange game codes when it glitches.

evil