On my new Fedora 15 installation the Cheese application crashes when I start it with the following error message:
(cheese:32394): Clutter-CRITICAL **: Unable to initialize Clutter: Unable to find suitable fbconfig for the GLX context
(cheese:32394): Clutter-WARNING **: Unable to create a new stage: the glx backend does not support multiple stages.
(cheese:32394): GLib-GObject-CRITICAL **: g_object_set_data: assertion `G_IS_OBJECT (object)' failed
(cheese:32394): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(cheese:32394): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Segmentation fault (core dumped)
Note that my web camera works properly when doing the video for linux gstreamer-properties test as well as with Skype. I have the NVIDIA driver installed from RPM Fusion.