Sure it does. Try 'man ulimit' on any unix machine.
Given how advanced the iPhone OS is, I doubt that managing and controlling background tasks is that hard to do. Most probably, they have just pushed it back on their priority lists to get it exactly right, that is all.
Given how advanced the iPhone OS is, I doubt that managing and controlling background tasks is that hard to do. Most probably, they have just pushed it back on their priority lists to get it exactly right, that is all.