Agree with @wunderdojo. Synergy is a game changer in my office, so naturally I wanted to try the latest version. 1.x was quirky, but once you got the config right it worked every time and was fit for a production environment. I paid for the 2.0 beta and left it on the shelf when it didn't work. Then I tried again once I saw a 'stable' version had been released. It didn't work either.
Glad it's working for some folks but this is not ready for primetime. I'm back on 1.8.