I have had ongoing problems with mine (3.0) on a dedicated PC running XP with no other apps in use. It is a pain asking a neighbor who has a key to reboot everytime it locks up. Often just the usual Windows message states that there is an error with EzWatch.
EzWatchIP locks if the internet connection is lost during a storm and when it locks it locks the entire PC. Their answer was to get an internet service that stays up. Sure, such a thing exists on cable service. I have a timer that turns off the router and cable modem every day to clear them and bought a 5$ IP app to replace EzWatchIP.
Half the cameras have failed but were replaced under warranty. I considered upgrading versions but wonder if that will be money wasted since I would probably have to buy another board.
Perhaps I can use the board with another vendor's app?