We are also running 1200LE on a Xenapp6 farm, and have dubbel login. Wery frustrating for the users.
Also we have some kind of “slow death” on the servers, but I am not sure it is related to the 1200LE terminals.
“Slow death” is more precisly for me crash in svchost_terminalserver and symptoms is unable to quser on server, users are getting harder and harder to get work done, things hanging, and unable to logon of off server. Unable to reboot server.