@Charlie, thanks for your clarifications. After changing Exec lines as you sayd and rebooting the system (nothing new happened) and .xsession_errors is:
" Setting IM through im-switch for locale=it_IT. Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default. GNOME_KEYRING_CONTROL=/tmp/keyring-fGX4Ov SSH_AUTH_SOCK=/tmp/keyring-fGX4Ov/ssh GNOME_KEYRING_CONTROL=/tmp/keyring-fGX4Ov SSH_AUTH_SOCK=/tmp/keyring-fGX4Ov/ssh GNOME_KEYRING_CONTROL=/tmp/keyring-fGX4Ov SSH_AUTH_SOCK=/tmp/keyring-fGX4Ov/ssh (polkit-gnome-authentication-agent-1:1764): GLib-GObject-WARNING **: cannot register existing type `_PolkitError' (polkit-gnome-authentication-agent-1:1764): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed (gnome-power-manager:1777): GLib-GObject-WARNING **: /build/buildd/glib2.0-2.24.1/gobject/gsignal.c:2273: signal `proxy-status' is invalid for instance `0x13c05d0' ** (nm-applet:1789): DEBUG: old state indicates that this was not a disconnect 0 ** (nm-applet:1789): DEBUG: foo_client_state_changed_cb Initializing nautilus-gdu extension Starting gtk-window-decorator I/O warning : failed to load external entity "/home/marcop/.compiz/session/103369b680c45b154b13080307702257200000017080027" Unable to find a synaptics device. evolution-alarm-notify-Message: Setting timeout for 57999 1308088800 1308030801 evolution-alarm-notify-Message: Wed Jun 15 00:00:00 2011 evolution-alarm-notify-Message: Tue Jun 14 07:53:21 2011 evolution-alarm-notify-Message: Setting timeout for 31898 1308062700 1308030802 evolution-alarm-notify-Message: Tue Jun 14 16:45:00 2011 evolution-alarm-notify-Message: Tue Jun 14 07:53:22 2011 " -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/520589 Title: Network manager icon does not appear in notification panel at startup To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/520589/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs