I have 2 G4s connected running OSX10.2.3 to a Draytek isdn router. We are using two Unlimited Freeserve accounts to connect on each channel. When we start off checking email or surfing erverything works fine. But after a while we cannot get email or surf anywhere, the message 'connection failure' eventually comes up. It is driving us mad. The only way round it is to use the router web interface to disconnect the isdn lines and start again. Any ideas?