Can't wait for Leopard 10.5.2
I am having significant issues with Mac OS X 10.5.1 and Photoshop CS3 Extended. These problems have rendered the cropping tool virtually unusable. According to Mac Fix It, "There exists a significant issue in Photoshop CS3 when running under Mac OS X 10.5.x (Leopard) where the crop tool does not work properly." Based on my own experiences they are understating the problems.
I know, it is my own fault. I adopted Leopard far too soon. You should never introduce a new version of Mac OS X in a production environment until at least the 10.x.3 release. But, frankly, I am having better luck with Vista than with the new Mac operating system. That is not good!