Let me preface this post by saying that I know about vncserver on the n800, vncserver on the desktop and RDP. All work fine to and from n800 and desktop, but I'd like a single app to be remotely displayed

I'd like to forward an X11 app on the n800 to my local X server on my desktop. I've set up OpenSSH, made sure that X forwarding is on in /etc/ssh/sshd_config, and that an XDisplayOffset of 10 is set, and restarted the ssh server. I then ssh -X user@n800, but my $DISPLAY variable on the n800 is still 0.0, rather than 10.0, as it should be. Manually doing an export DISPLAY=':10.0' doesn't work either, nothing displays on my local X server.

The other way around (ssh -X from n800 to desktop) and then running an app works fine. The DISPLAY variable (on desktop at that point) is properly set to 10.0, and I've compared the sshd_config files from n800 and desktop line-by-line, and they're identical for everything that should affect TCP and X forwarding.

Is this a limitation with Matchbox and Hildon, or am I doing something stupid here? As I say, I know how to forward X connections over SSH normally, but this isn't working.