multiplayer issue

[Carlos Jorge AR Pacheco]

Hi guys , im running in a linux box and i'm running the demo version 
without probs but when i try to connect to a server and it fails once it 
never works again ...
for example a friend of mine made a server and told me to log in (a 
password server) when i tried to connect the first time it showed the 
password box and i entered it . then it didnt work ... jumped the 
starting animation again ... and now everytime i try to connect to that 
same server it doesnt even show the password box and i never get to 
enter it ... can anyone help me please ?
Thanks in advance
Carlos