Hi Sebastian
See if this thread helps check to see if port 6346 is forwarded from the router to your machine.
http://www.gnutellaforums.com/showth...threadid=23369
or
http://www.gnutellaforums.com/showth...threadid=25119
btw--details about router model numbers and platform can help attract answers from those with a similar set-up
There is also a quick port check for firewalls
http://www3.limewire.com:6346/