Force-downgrading gdm to the version as at gutsy beta (2.20.0-0ubuntu2) fixes the remote end for me - I can connect to it with other systems; but it does not fix the client end (I still can't use XDMCP to connect out from Gutsy).
Force-downgrading gdm to the version as at gutsy beta (2.20.0-0ubuntu2) fixes the remote end for me - I can connect to it with other systems; but it does not fix the client end (I still can't use XDMCP to connect out from Gutsy).