I have an issue with a network card that stops functioning (unfortunately I'm not at the clients site when it happens). It is a laptop that they disconnect from the network, and later when they plug it back in, it doesn't reconnect to the internet. It has a static IP and is the only device running behind a Linksys router. I noticed that the NIC was set to 'allow the computer to turn off this device to save power', and was wondering if anyone has had this cause a problem before. How long does it take before it 'turns off the device', and is it usually pretty good about resuming automatically when it detects network traffic?