You need to give a bit more information than that.
Does this happen on every server or just that one?
Does this always happen or can you get on the server if you try long enough?
How high is the ping of the server in the server list?
And it's most likely not a problem with your account but with your connection. Or the server simply is too far away.
Mmh I´m also having problems lately (since 2 weeks or so).
First of all the hostlist takes awfully long to load and half (at least) of the servers don´t give a response. Already tried everything (tried on 4 different computers), rebooted my router, my DSL modem, reset both of them, still no change. Even tried on fresh LFS install. Don´t know what to do now, I hope it ain´t the ISP but who knows?