So I have read about iPad 2 wifi issues, but I haven't yet figured out my particular issue. When I connect my iPad 2 to my Linksys WRT160n, the next day the wireless stops working, no device can connect, Windows laptop, iPad, Kindle, they all say invalid network key but nothing has changed, if I reboot the router it's all fine again. This all started when I got my iPad, I tried updating the router firmware and resetting it back to factory defaults and setting it back up again with recomended settings from other posts, WPA2, not dual band, 20 mh only. Any ideas?