Is it worth waiting for leopard? I'm going to buy the 24' iMAC, but should i buy one now with tiger preinstalled or should i wait for leopard to be preinstalled? My lessons are starting in 2 weeks and i'll probably need a computer then... . If they're going to release it in the beginning of october, i'll wait, but i'm afraid it's going to take longer... . Btw. this is going to be my first mac... so i'm new to it. Thnx anyway.