[Ubuntu 11.04]I get no audio if I launch gstreamer via gnome-session-manager

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http://linuxfloat.org – Hi guys, I've a problem. I got a python gstreamer program. if i start ubuntu, then open a shell then launch it it works, if i launch it via gnome-session-manager I get no audio. so 1) what is different launching a progrm via gnome-session-manager, 2 where can i get the logs of programs launched this way? any ideas? thanks (HowTos)