Synergy will not launch on ubuntu 10.10 64bit.
I have tried: -rebooting -removing and reinstalling Synergy -using previous stable and beta versions
but still nothing, any advice on the next steps I can take?
You can pass synergy a command line parameter to log everything:
You can pass the --log to the client side as well. If you're using a GUI utility to do this, there should be an option somewhere to set Synergy to output a log file. Running from the terminal, though, would be the best option to troubleshoot.
Unfortunately you're not clear enough on whether you're using Synergy with a GUI, if the Ubuntu box is the client, or things like that.