So, I finally decided to try out Lion. Since I'm on Leopard 10.5.8 I opted for the thumb drive, which arrived today. Stick it in the usb, start the computer, open the thumb drive folder, click on the Lion icon (which has a nice big white slash through it), and get the message: "You cannot use this version of the application Install Mac OS X Lion with this version of Mac OS X." Is this because I'm on Leopard and not Snow Leopard? I thought part of the point of the usb is to avoid upgrading to Snow Leopard only to go straight to Lion....... Or am I missing something??