This very much seems like a faulty port. You are able to connect to others because their ports are generously opened nice and wide, however they can't connect to us because your ports are stingy, or in simpler less sacarstic terms, we didn't configure our ports properly. Bottom line: we didn't portforward correctly.
Seems likely so, because the portchecks I've taken claim my ports are still closed even after portforwarding for COUNTLESS of times.
Lets hope 1.01 will show some improvements. It is really my last resort now.