Got the same problem.
Old hnh and salem works fine.
For now I tried using different java versions. Cleaning the cache(in case of messed up download). Updated my gfx drivers too although i doubt it'll change a thing for me(was using driver only 2-3months older than newest one

. Will tell if it's fixed when serv is back up.
system: Win 7 64bit
gfx card: amd hd7670
I want to try the game so if it'll come to worst i'll just try installing some linux distro and see if that helps >.>