Answer to: Apple's Diagnostic Icon IdentificationsHere is a link to some info on the Mac icons Intel-based Mac: Startup sequence and error codes, symbols I'll see what else I can dig up later.
Answer to: erase all songs on iPodIf iTunes isn't working you can try this: iPod Reset Utility
Answer to: Is there any usb to firewire adaptor?200% faster or not speed isn't really an issue. The problem is Firewire and USB use two completely different protocols and technologies for sending and receiving data. Pixela did make an adapter for a short time but now it's almost imposable to find. And it only worked for transferring video/sound feed from a video camera using windows (via bootcamp, vmware, etc...) In short, take the MacBook back and get a Pro or Mac Mini. Some good info from Wikipedia on the subject: FW Comparison with USB USB comparison with FW