We have several Toshiba Satellite L450 Laptops that randomly drop the wireless connection. Internet Explorer will freeze, you get the pop-up window from the wireless connection icon saying that you are connected to the network and it then shows full signal strength. IE8 will not recover and the only way to re-connect is to reboot the PC. We tested with another (Lenovo) laptop and moved to all the same areas, with not a single drop of signal. We got updated WiFi drivers from Toshiba, but they didn't help. Any ideas?