Quick note to self, to save some searching next time.

Microsoft LifeCam VX-1000 does not quite work on Ubuntu and even worse with Skype.
To get video working on Skype, start it as :
env LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype

And to get the microphone working, run this in a terminal
sudo rmmod gspca_sonixj
sudo modprobe gspca_sonixj