Mac OS X 10.6 ("Snow Leopard") has been released on Friday 28th August, 2009. We are currently testing Psykinematix under 10.6. So far so good as we found only a few small glitches, and we expect to release an update in the coming weeks.
While we are not recommending you upgrade your experimental setup to Mac OS X 10.6 yet, we still welcome feedbacks in this forum. Thanks!
-- The Psykinematix Developer Team