Has Apple tried to give a golden egg to the cell phone companies? Has anyone noticed that if you set your lock time to x minutes, the phone doesn't just lock, it goes into standby. When it does this, any WiFi connection you have gets dropped and all push/data functions such as e-mail checking are done through the 3G network.
There is no way to change this feature and functionality and it's very annoying, especially if you are downloading something or loading files over the WiFi to your iPhone.
I'm not sure if there is a jailbreak App to address this, but hopefully there is or that one will be made soon.
This is a huge blunder by Apple and also is an arrogant and blatant move to line the pockets of the cell phone companies.