I decided to run a fresh install on my 08 MBA today. I tried to do it wirelessly and when the machine restarted for install it came back up with a "no symbol" and just kept spinning. I tried connecting via the ethernet dongle with the same result. I didn't know what I could do different with the machine so I decided to make an external boot disk. I put the install on a 250 external drive from my iMac August 07. Once the install finished the computer restarted and was just sitting there spinning the 12 dashed circle below a "no symbol". Now I've restarted it and im getting the same thing! (I know how to get the iMac back to its regular system, just not how to get a new one one the MBA) Any ideas?