I have the leopard beta installed right now, and i also have a final leopard upgrade dvd. to my understanding, the upgrade dvd is the exact same as the full retail dvd with the exception of the ilife suite. therefore i plan on doing a full install wiht it, without ilife of course, and want to know if time machine is suffiecient for my back up. i have been using time machine ever since i installed the leopard beta. Does time machine back up everything? i cannot afford to lose anything? thanks in advance.