Why skype can't see webcam?

[Yuri]

I have webcamd running and can see my webcam using mplayer like this: 
mplayer tv:// -tv driver=v4l2:width=640:height=480:fps=30:device=/dev/video0
But skype can't see the video. It only sees /dev/video0 device but when 
I try testing it image is black.
v4l support was recently added into 8.1: 
http://www.leidinger.net/blog/2010/07/29/v4l-support-in-the-linuxulator-mfced-to-8-stable/, 
this is related.

Anybody knows why skype can't use video?

On the other hand, I tried to debug this with 'truss -f', but -f flag 
doesn't follow descendants of the linux process for some reason as it 
should. Any way to work around this?

Yuri