For a better connection

Hi all i play at metin2.us and since no one there know a good way to avoid disconnection, i would know if players of crossfire know it.
My problem is that i suddently logout automatically, while i'm doing something of really important and i practically lose everything all times i dc.
All my failures in metin2 are dued to disconnections...
Isn't a shame?
Do also players on crossfire have this problem and how to avoid it?