The other day I looked into switching away from synergy to Mango Lassi. I only use it between two machines, so I figured my use case was simple enough that it should work at this stage. I was not disappointed. I was getting some very strange behavior with synergy and vmware, and Mango Lassi has none of that. Plus it gives an OSD telling you which machine the mouse/keyboard are being used on, which is a nice perk.
Anyway, I was so happy with it that I made packages for openSUSE. You can get it from my build service repository.