Unfortunately, desyncs are more serious than that. I'm playing with my daughter over the local network, and she gets desync messages often, usually within a few minutes. When they occur, litter and puke shows up everywhere (who knows what the handymen are doing over there), benches get broken, and the park rating plummets. Mind you, this is only on her computer; everything looks peachy on mine. It happens within ten minutes of play.
DON'T get me wrong, folks: this project is great. I just want to make sure it's understood that desynchronization is 1) common and 2) a fairly big pain in the butt.