In response to some of the problems with the USB hub, Half way through build season ours stopped working just about half of the time. What I mean by not working, is that nothing could be recognized by the Classmate. we solved the problem by purchasing a new USB hub, and since then, we have not had any problems.
On one occasion, we were at a pre-ship mini regional and we could not get the Joysticks recognized during the last match of the day
, the problem was solved again by replacing the hub. After discussing with other teams, we discovered many were having this exact same problem with the hubs.
I would recommend all teams to have a spare in case theirs goes down before a match! (Theres nothing worse than a dead robot!)
-Mcgurky