Logging in forever, or java error

Welcome. I can't join any (99%) Poland server, but other servers are good. Sometimes i have Logging in forever, or java error: Nawiązane połączenie zostało zerwane przez oprogramowanie zainstalowane w komputerze-hoście
Google translate: An established connection was broken by software installed on the host computer. On server list i have sometimes "Pinging...", "Can't connect to server", or server description (almost never).