I have been using Panther most of the day now and I love it. I just unplugged my USB mouse and discovered that the trackpad doesn't work. Further investigation I discovered that I had Ignore trackpad when mouse is present check in the Keyboard and Mouse Preference. After unchecking that, I can now use the trackpad. For some reason, even thought the mouse was unplugged, it still thinks that a mouse was present. Has anyone else noticed this?