hi Alessio, from the link you posted: http://askubuntu.com/questions/36434/how-can-i-remove-duplicate-icons-for-launched-java-programs-in-the-launcher
# run this, then select the freeplane window: $ xprop | grep WM_CLASS # on my system: WM_CLASS(STRING) = "sun-awt-X11-XFramePeer", "java-lang-Thread" => have you tried to modify: /usr/share/applications/freeplane.desktop to add a line: StartupWMClass=sun-awt-X11-XFramePeer or StartupWMClass=java-lang-Thread and logout+login? Best Regards! -- Felix Natter -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org