thnx to mc4man there is a workaround(http://ubuntuforums.org/showpost.php?p=11701414&postcount=15):
gedit ~/.config/autostart/synclient.desktop [Desktop Entry] Type=Application Exec=synclient LockedDrags=0 TapButton1=1 TapButton2=3 TapButton3=2 Hidden=false NoDisplay=false X-GNOME-Autostart-enabled=true X-GNOME-Autostart-Delay=5 Name=onetap -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/840509 Title: touchpad triple-tap to middle-click stopped working in 11.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/840509/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp