I upgraded my iPhone 3GS to iOS 5.1.1 about 2 weeks ago. I always use Bluetooth to connect to Personal Hotspot from my MacBook Pro, and everything seems ok.However a few days ago, I connected the phone to a Windows 7 laptop using USB cable to share the connection, but it wouldn't work. Thought it's because iTunes version a bit old, updated it to the latest 10.6.3, but still won't work. Tried to connect through Bluetooth but keep getting this "Bluetooth Peripheral Device driver is not found." error....Strange, must be a Microsoft Windows issue then, right :-) ? Not exactly, as I tried...