I have problems with the other computer. Someone was using it over the night in the last 3-4 weeks. Visiting porn sites and installing who knows what. Now firewall hangs after startup. If no one is there to end it and starts firewall again, computer is open for internet attacks. I've tried to find the reason, but had no success. The only solution is reinstalling windows and that can be done in a few weeks, not before. Until then hub may be down for some time.