Hey Aaron, you might want to check to make sure that you are not getting outside interference from anouther source like like a neighbors WiFi or cordless phone. I know when I put in my wirless network one of my WAPs had some interference from a cordless base unit being to close to it. It was a real pain in the ass to figure out too. cause it would do just what you are describing, one min everthing is 54Mps the next nothing...
