CAM Upside Down
On some laptops where the CAM was installed during manufacturing Upside Down, the CAM image is upside down on Linux. This seems to effect mostly skype and cheese. Here are some links that explain how this may be fixed.
Skype
env PULSE_LATENCY_MSEC=30 LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l1compat.so skype %U
The above line can be put in a script or directly in the menu launcher.