Keyboard problem

[lunedor]

keyboard dont work properly:

character cant move when I press arrows keys

chat dont work : I see what other players write, but I cant enter any text

when I press enter key, I switch to ubuntu main screen (another enter gets me back to RO)

keys "i", "p" and "s" give tech data, lag and screenshot, as if "alt" key where pressed

mouse works (i can interact with nearby npc)
music works
screen is complete

i'm on ubuntu 8.04

both characters have the same problem
I'm on Horus but it doesn't work on experimental server too

help me please