TS connection freeze problem.

[TheDeathArt]

Hey

I recently moved in at a friend of mines appartment, and there we got a strange connection problem with teamspeak.

We can connect to the different TS servers fine, but after a few seconds we cannot change channel anymore, and nobody can hear us, neither can we hear them.

After around 10 minutes TS "times out" the connection, but between that it's like the entire application is frozen.

I never had a similiar problem, so it's not a client or computer problem, but a connection thing.
We have checked the router, and the port is open, but if there is anything else, we don't know what to look for. Ventrilo and Skype runs fine btw. which makes it even more strange.

Any suggestion would be varmly welcome :-)