I've been using (and loving) synergy on my Macbook Pro running OS X Snow Leopard and Win 7 laptops, as server and client respectively. Today I installed OS X Lion Developers' Preview 4 (made available a couple of days ago to those who enroll as Apple developers) on a new partition on the same Macbook. I decided to try running the synergy server on the new Lion installation by copying the synergys executable to the /usr/bin directory of the partition containing OS X Lion (I noticed , and then running the QSynergy app residing in my Snow Leopard partition to configure the server.
Upon running the synergy server app on Lion (with Win 7 as client) I was able to share the mouse, but not the keyboard. Any clue as to what may be happening? Should I try compiling the server app from source?