Originally Posted by Callistus
Press Menu button->Settings->Wireless & networks->Wi-Fi Settings->Menu button (again)->Advanced.
Under Wi-Fi sleep policy, choose the setting of your preference (I use "Never when plugged in". When not plugged, this setting turns off Wi-Fi when the screen is off.
Forget LG's advice (not battery savvy) and stop killing Wi-Fi. Just use my setting and plug the phone in (or extend the screen timeout) when you want Wi-Fi to be alive.
I have no problem getting Wi-Fi back from sleep mode (maybe because I don't use a 3rd-party app to manage it).
Ok will try, hopefully the Task Killer app won't override this setting. But to give credit, my phone's battery/memory usage performance improved by at least 50% after using this app. Thanks!