broken-imacApple’s new Core i7-based iMac might be a performance monster, but it looks like the whole family’s having some problems getting out of the gate: in addition to the previously-noted performance issues with the Core 2 Duo models, a quick glance across Apple’s support forums and on other Mac boards around the web reveals that some machines are showing up dead on a arrival and / or with cracked screens, but if you’re about to stick one of these under the tree for someone it might be wise to do some surreptitious testing first.