[FreeNX-kNX] network connection breaks

[25072005 at nitwit.de]

Hi!

NX works fine in my home LAN but from the Internet the network connection 
breaks as soon as I start "real" applications., i.e. I can start xterm, I 
can start xclock, kcalc and even knode but not thunderbird. The window 
shortly shows up and then disappears - according to freenx because the 
network connectin broke.

Well...hmm...any idea?

Thanks