I tried to search the forums for an answer to this but have not really found any straight forward answers. I am not a computer genius so the simpler explanation the better for me. I upgraded to Leopard a few weeks ago and really like it. However, just the other day I started having this problem. I can not eject or unmount anything anymore. I can not eject my external hard drive or any other .dmg programs downloaded from the net. They just sit there. I have tried ejected them using the icon next to them in the device panel and I have dragged the icon to the trash. The only thing that works is if I go to disc utility to eject them or simply restart my computer. Does anyone know why this started happening all of the sudden?