Please add ~amd64 to >=net-misc/gfax-0.7.3 as mono now works on amd64.
see bug #83748
This is a gtk-sharp program, so it depends on the gtk-sharp bug.
crashes here when selecting here when selecting hylifax in preferences... (Gfax:14567): GnomeUI-WARNING **: While connecting to session manager: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed. System.Net.Sockets.SocketException: Connection refused in <0x000f0> System.Net.Sockets.Socket:Connect (System.Net.EndPoint remote_end) in <0x00029> System.Net.Sockets.TcpClient:Connect (System.Net.IPEndPoint remote_end_point) in <0x00273> System.Net.Sockets.TcpClient:Connect (System.String hostname, Int32 port) System.Net.Sockets.SocketException: Connection refused in <0x000f0> System.Net.Sockets.Socket:Connect (System.Net.EndPoint remote_end) in <0x00029> System.Net.Sockets.TcpClient:Connect (System.Net.IPEndPoint remote_end_point) in <0x00273> System.Net.Sockets.TcpClient:Connect (System.String hostname, Int32 port) Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object in <0x00000> <unknown method> in (wrapper managed-to-native) Gtk.Application:gtk_main () in <0x00008> Gtk.Application:Run () in <0x010f8> gfax.Gfax:.ctor (System.String fname, System.String[] args) in <0x005b6> gfax.gfax:Main (System.String[] args)