Re: ubuntu 8.04 issues in my macbook
To fix your iSight follow this guide.
Video from those sites you mentioned are streaming in proprietary video formats which Ubuntu can't support out of the box for legal reasons. However, it's perfecting easy to install support for them by going to Applications -> Add/Remove. Then under the Show menu change to All available applications. With the All category selected in the menu on the left search for restricted. This will return two results, go ahead and install Ubuntu restricted extras. You should be able to watch your videos now.
Or, you can do the exact same thing as above by opening a terminal (Applications -> Accessories -> Terminal) and typing:
Then enter your password.
sudo apt-get install ubuntu-restricted-extras
"This would make more difference if it made any difference at all; but it doesn't make any difference at all, because you are listening to a conversation among dead businesses." -- Eben Moglen