I have a D-Link DSL-G604T wireless adsl router. This came as a kit with a USB adapter (DWL-G122) which I plug into my laptop. I recently broke the adapter and bought a new one from ebay, still a DWL-G122 but a different version. I installed a new driver for the new adapter. It will connect to the router/internet for a while but then seems to switch off and is unable to detect any wireless connections. I never had any problems with the original usb adapter. Does anyone know why this might be?