oh sorry, didn\'t saw the thread above about \"linkdead\". i try to find out, how to fix this. be back soon.
Edit:
ok, so for mandrake linux 9.1 users that use \"shorewall\" als firewall is this maybe a little fix:
open shell
type \"su\" then your root-pw
kwrite /etc/shorewall/rules
scroll down and type
ACCEPT net fw udp 13331 -
save it and exit the console.
now thats not a quite good fix but for me it worked. now the firewall sends the data to the server and back.