Ok.. the first issue isn't really one, but it's annoying that it's not working like it used to. I have a Logitech mouse with 2 buttons on the left hand side. The 'back' buton I assigned to bring up Spaces, and the 'front' button would show all running applications on the screen. I would love using that because if I'm copying files/folders between stuff a simple tap of the button would let me move more easily. Now, nothing happens. When I hit the button the current app brightens, the background dims a bit, but it doesn't show all the apps that are running on the desktop. Any clues/ideas? The second thing was a little more scary, and had me flashing back to my windows days. I was in the middle of playing World of Warcraft and burning a DVD. When the DVD ejected, I get this message on the screen and couldn't do anything else after that until I rebooted. This happen to anybody else?