It looks like a problem so trivial that there got to be something wrong with my setup.
When I start ekiga - it catch up my usb webcam and it works just fine.
When I use SC there are only options for "desktop streaming" and "no device".
Is there something specific I should do to let SC see my cam?
I can file bug for that if you need to track this issue separately.
P. S> ubuntu 10.04 x86_64