Hey there. Took a look into your problem. I have had my own issues with "newer" logitech webcam products

Hey there. Took a look into your problem. I have had my own issues
with "newer" logitech webcam products so i was keen to see what issues
you are having too. I came across this thread here I think you should
have a look at.
http://ubuntuforums.org/showthread.php?t=263856
Looks like this cam has had support issues since Dapper Drake.