XDMCP and IPv6
If you are running an XDMCP session and get a “Waiting for query response from host…” message you may have IPv6 enabled.
This issue was fixed in 8.1.1134
You can download the latest version of X-Win32 here
Note Windows Vista supports IPv6 as it’s primary protocol. If you plan to use Vista with XDMCP update today!
Category:Sessions -> XDMCP
Category:Bugs
Category:Applications -> Windows Vista

Solutions