If you have problems with the webcam in skype with Linux, you may have read that you need to run skype with:
LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so skype
However, you may get the message:
ERROR: ld.so: object '/usr/lib/libv4l/v4l2convert.so' from LD_PRELOAD cannot be preloaded: ignored.
Then try running instead:
LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l2convert.so skype
This is caused by the new Multiarch support in Debian.