CG  Causes logout to hang 30-60 seconds with Leopard. Tried on two separate installations with the same results. It doesn't even matter if the card is plugged in, the results are the same. After I deleted the kernel extensions the problem went away, which obviously also kills the ability to use the product at all.  
(Version 1.1.1)

CG  I also agree the game needs a keyboard interface. Hard core gamers can figure out piece orientation and I guarantee scores will shoot up if a mouse is not used. I cannot think of anyone that is a proficient typer, or great gamer, that prefers to use a darn mouse for anything. I am not sure what "extensive testing" means (as posted by the devs in a reply) but I think the wrong folks were obviously used to test. So please, add a keyboard interface to the game.

Other then this one issue, I love the game.  
(Version 1.2.1)