Ok so i have noticed since upgrading to 10.5.2 and the respective graphics card drivers that leopard runs a lot faster and all effects and transitions are smooth and fast. Application load times are a lot faster, safari feels faster at switching tabs and scrolling. And even photoshop starts a lot faster of a cold boot and second time. All of the menu text is nicer to read and the non transparent menu bar looks a lot nicer than the black bar method. And the improved contrast with the stacks helps a lot too. Game performance on my GMA 950 is greatly improved gaining 5 - 20 FPS in areas of warcraft making them no longer like a slideshow and it runs a lot smoother overall too. Overall it makes leopard more stable than my tiger experience as well and a lot faster than tiger was i hope Apple put a lot of work into 10.5.3 to make that as significant a upgrade as 10.5.2(0 this should have been public build) is. Anyone else got any positives to add?