win+L key combination ignored when locking windows 7 client

Hello,

I have a configuration with three PC with Synergy 1.4.7:

• server : win7 64bits
• client_1 : win7 64bits
• client_2 : xp 32bits

when I want to lock my computers I would like to use the WIN+L key combination. Actually I have this behaviour :

when locking on client_2, this client and the server locks when locking on server, only the server locks when locking on client_1, nothing happen my WIN+L key combination is ignored

I also have tried this option in configuration file : keystroke(control+alt+u006C)=keystroke(super+u006C,*)

but then only client_2 (under XP) get locked, wherever I press the combination control+alt+L.