gdm and kdm appear to not follow freedesktop.org's Desktop Entry specs correctly if they cannot handle arguments. I'll change the starte16 script's behavior anyway.
[1]http://standards.freedesktop.org/desktop-entry-spec/desktop-entry-spec-latest.html#exec-variables -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]