Known Issue: Premium Statistics Scoreboard
After the September 11, 2012 update, the Statistics scoreboard at the close of a premium clan arena match are incomplete for Linux clients. Only the first player on the scoreboard shows individual weapon statistics. All other players show a zero for all guns.
I have confirmed with another player that's using the Windows client that their statistics scoreboard is complete and that they are not experiencing the issue that I am.
Ubuntu 12.04 x64, QLPrism launcher