Normally under SSH, DISPLAY will be set to something like:
DISPLAY=localhost:10
and SSH will forward TCP port 6010 on the remote machine to the local machine's X server on port 6000.
It *could* be that Wine is looking at DISPLAY, seeing "localhost" and saying "AHA! This is localhost - I can use shared memory" - which it cannot.
To test this hypothesis, try setting the DISPLAY environment variable to point directly to the computer you are using as the display (and making sure that machine is set to allow the remote machine to use the display), and see if the problem continues.
If it does, then my hypothesis is wrong. If it starts working, then that would tend to confirm my hypothesis that Wine is being confused by the "localhost" in the DISPLAY variable.
