They are checking you out to make sure your copy isn't pirated.....just kidding. It's an option under options>preferences that allows it to connect to the net to search for upgrades. I disable it- as much as I'm online I'll know the minute an update becomes available. If anything I'd engage internet lock (if your using a firewall) while editing...that way you won't wast any cpu processes inadvertantly. People are ALWAYS pinging and scanning ports.