Using the standard flight mode switch from profilematic always switched the wlan off at the same time. So I cannot use the WLAN condition to trigger it, because the WLAN connection is lost if the rule hits and the rule kills its own contition and ist deactivated next. But today I found a way to switch off the gsm modem only, using custom action and a dbus command, documented at: http://wiki.maemo.org/User:Jebba/DBUS