[unreal37]

Kinda splitting hairs. Even though it's automatic, it's not called garbage collectio, and its handled quite differently in iOS 5 than in languages such as Java. iOS releases memory the instant its reference counter gets to 0 - not seconds or minutes later.

As you must know, the very name Garbage Collection implies an asynchronous process that travels up and down the program memory street at periodic intervals, trying to find garbage to collect.

The iOS model is more like a waiter in an expensive restaurant who comes and takes your plate away the instant the last morsel of food is in your mouth. You don't have to discard the plate yourself, but you can guarantee he will pick up your plate the moment its free to be picked up.