That is bizarre. Can you tell me how long this has been going on?
Quick question, have you tried connecting the router to the computer directly for a wired connection? The reason why I ask is because I'm guessing it's your USB wireless adapter.
http://www.newegg.com/Product/Produc...82E16833166056
I currently use this and have had no issues. In any case, have you tried switching the USB Adapter to a different port?