I'm using a built-in wireless adapter in my laptop to connect to a router in the room next to me. I've had the router for a couple months, and my Internet has been really fast. But for the past few days, my Internet has been really slow. It goes from really fast to slow. Like today, at around 4 P.M., it was really fast. 30 minutes later, it became really slow. My signal strength is excellent. I have two other computers accessing the network as well, and it really fast for those other computers. But mine has been really slow. So I tried using a USB Netgear WPN111 Wireless Adapter, and it is still really slow. I have disabled my ethernet port, because I didn't want it to interfere with the adapter, but it is still slow. Does anyone have any suggestions as to how I could fix this?