I have a HP laptop running vista home premium. When I close the lid and leave the computer sit for a while and then when I come back after a few mintues I find that I am no longer connected to my wireless network.
I have adjusted the power settings to "do nothing" when closing lid, Never sleep, turned off screen saver, and disabled power management for the wifi adapter. I have also tried turning on presentaion mode in windows mobility which says that its supposed to keep the computer awake. I only loose my connection when I close the screen on my laptop. I have already installed the latest drivers.