Hi, I have one major problem with osx in general, it's using an external mouse. I could use the trackpad for casual use, but I need a mouse for more work related stuff. It already annoys me that you can't have natural scrolling for trackpad, and reverse scrolling (actually normal scrolling) for mouse, seperately. But the worst is the accelerated scrolling, where 1 slow scroll moves down the page with 1 pixel, but one fast scroll, takes you down the whole page. And the last annoying thing is when I do have reversed scrolling on, volume control is still upside down, so scrolling up silences the sound, which is not right at all. Oh, I don't like the apple mouse, so that's no option for me.