Note that the suggested workaround to upgrade synergy from 1.3 to 1.4 will break compatibility with existing 1.3 servers:
$ synergyc -f localhost INFO: Synergy 1.4.8 Client on Linux 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:52 UTC 2012 i686 NOTE: started client NOTE: connecting to 'localhost': 127.0.0.1:24800 WARNING: failed to connect to server: incompatible client 1.3
Note that the suggested workaround to upgrade synergy from 1.3 to 1.4 will break compatibility with existing 1.3 servers:
$ synergyc -f localhost
INFO: Synergy 1.4.8 Client on Linux 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:52 UTC 2012 i686
NOTE: started client
NOTE: connecting to 'localhost': 127.0.0.1:24800
WARNING: failed to connect to server: incompatible client 1.3