A common problem for Linux’s skype is the camera. Often it doesn’t handle the input data from the camera correctly. Usually green lines are being displayed where the proper image should be. This happens to users with 64 bit OS or users with older cameras.
The problem is easily solved if you enter the following code in your shell.
LD_PRELOAD=/usr/lib32/libv4l/v4l1compat.so skype &
Basically you load your skype with the 32 bit libraries for video capturing.
This code works absolutely fine for Ubuntu 9.10. I assume that it will work on other Ubuntu versions as good as it does on my machines. The only problem may be the path. But a quick
find will do the job for you.