As you can see from this screenshot:
http://i.imgur.com/xxCYD.png
There are some graphical issues. None of my character is displayed other than helm and weapon. The same applies to other players, and enemies are not displayed as well, though they are still highlighted as if they were. I am using linux based on ubuntu 10.04 with this Java:
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.8) (6b20-1.9.8-0ubuntu1~10.10.1)
OpenJDK Server VM (build 19.0-b09, mixed mode)
I assume this is just an OpenJDK bug but will check back after switching off of it.