Hi. I have a Sony VAIO laptop (VGN-S480) and the WLAN wireless switch utility has not been working properly. The switch is turned on, but the light flashes off and on, and so the wireless connection only works intermittently. The computer is a slightly older model, and therefore does not seem to work with the Smart Network. I have searched many sites, and can't seem to find a solution, although it does appear to be a software problem (not the switch itself) as I have been able to do some temporary fixes in the past. Running on Windows XP professional. Please help if you can.