I finally got around to giving your suggestions a try.  It appeared to work in the building that was giving me problems, but when I returned to a location that did not have a problem, I was experiencing the same thing.  Could this all be a result of interference even if other devices in the same room, connected to the same WAP are not experiencing the same thing?  That is what appeared to happen yesterday.  Granted, there were other non-computer electronic devices in the room and a Mac connected to the WAP as well, but the other PC in the room did not experience an unstable connection. ... View more