I'm wondering if the the superdrive is capable of burning 4x DVD-RW's. I have the firmware revision 1.9 for the drive. I can find 4x DVD-RW's at a few big box retailers but i know I can't find and DVD-R's at them. If anyone has tried them and had success i would like to know before i go buy the discs. I'm trying to make a single layer DVD copy of Leopard. Need to install it so i can update to iPhone 4 this weekend and don't wait to wait to place an online order for a plain...