Sorry to bump such an old thread but I have added a Mediator SX to my BlizzardPPC setup and get the same behaviour the person here is getting.
Are you still able to E-mail those files lempkee? I would like to have a look.
Also, I'm a bit dissapointed so far with the solid window moving speed. The Grex/Voodoo3/CyberGraphx combination does this waaaaaaay faster.
