hello, I have a white macbook with a 160 gb drive, 2 gigs of ram, and 2.4 processor, and i have been having problems with leopard recently and i want to add a new HD, so i would need the DVD's to restore leopard in both cases, well just to try out the DVD's i put it in, and then i clicked the appropriate icon to install and then i clicked on restart as the on screen instructions told me, only when it restarted it would stay at the apple symbol and grey screen for almost 10 minutes, and i would try again and again. i don't think it is the optical drives fault because to rule that out i tried our imacs restore DVD's and i was able to get to the language screen unlike with the macbook screen. The macbook discs are a bit scratched up, i left them out one weekend and well bad news for them, but even with the scratched the macbook was able to read them with finder, i just wasn't able to get to installer after the restart. Am i going to have to buy a new mac os leopard disc from apple? will they give me new ones? Is there a limit on the restore DVD's because i have done this once before. Some more info, these are genuine apple discs that came with the MacBook. Thanks in advance.