I have found a way of fixing the "You have lost connection to the server.Please check your network settings".This bug wil disconnect you after about 5-20mins play.You will notice ppl all get frozen just before the kick.

This happens for some routers/modems when UPnP is enabled, so first disable it.Then your going to need to forward the ports manually, just to make sure nothing gets blocked.I forwarded all the game ports and some changable ports that some server admins may use for their servers.If you dont know how to port forward this site wil show you how for your router/modem
http://portforward.com/

TCP 80 - 80 80 - 80 - -


TCP 18121 - 18121 18121 - 18121 - -


TCP 18126 - 18126 18126 - 18126 - -


UDP 18126 - 18126 18126 - 18126 - -


TCP 13505 - 13505 13505 - 13505 - -


UDP 19567 - 19587 19567 - 19587 - - <---this are ports admins may use as the servers port