Hey Mike, thanks for your reply. I'm using an intel i7 950 CPU @ 3.07Ghz, 6MB Ram. USB devices connected are: Mouse, Logitech G600 Keyboard, Razer Blackwidow Webcam, Logitech C270 Wireless LAN card/dongle Windows 7 Home Premium 64 bit SP1. The XWG1 has been connected to various ports, not USB 3.0. Just regular USB ports. Same result I'm afraid. I'll have another crack at it tomorrow on a friends PC.