22 Feb
                
                    2012
                
            
            
                22 Feb
                
                '12
                
            
            
            
        
    
                2:56 p.m.
            
        Only a random stab in the dark, but what USB port is it powered by? Could the device supplying the power be going into a power-saving mode and shutting down power to that port?
usb port on BT homehub works well :) Colin