@tonyhonk: thanks but at the end this therad had not helped me. i tested the thing with the port forwarding but it dosent works better now(i have got an t-online rooter too).the problem seems to be the same i have tested the thing with the java cache but it didnt work too and the other therads dosen`t helped me too so maybe something else^^.
and to all others its not an hang or crash. if i enter the house i get into the login screen my char is chilling in my house (the same at the HF(if an big village seen on my screen i get pw0ned back to the log in screen too (maybe only on an boat (i didn`t want to test it because i can not just log in at the place where i was at))(not if it loads the entities(note to my self: do not write so mutch clamps )(ok how mutch clamps was this 1...2...3..errr)))))(i dont know if that clamps are right

) and i cant login only after i have restarted the game^^