Black screen/Not responding after server select

[Kahuna]

The title pretty much says it all, I select a server and I get a black screen and nothing happens........ What am I missing?

[Belfedia]

The title not say:

What client are you use ? (titanium or last eqemu)
What server you try to connect ? (0.6 style or 0.7)

We can help you more with this information :)