rex -x setting empty DISPLAY

Console snip:

adam@saturn betty.tesolmail.com $ rex -x betty.tesolmail.com
rex: Connecting to @betty.tesolmail.com,xkt6ew5pvw8ft72zsuu2wp7njk5apms7
[adam@betty adam]$ env | grep DISPLAY
DISPLAY=
[adam@betty adam]$

This is causing X-aware apps to get confused. If X-forwarding is disabled, 
no DISPLAY variable should be set.

Or maybe this is a bug in my systems configuration?

Also, how can I set per-host configuration for rex?

Thanks,

A.

--
Adam Sherman
Tritus CG Inc.
http://www.tritus.ca/
+1 (613) 797-6819