DVD Keys for Ubuntu 10.04 10.10 and 11.04

If you need new keys, or to update the keys for dvds then do the following in 10.04 through 11.04

sudo apt-get install libdvdread4
sudo /usr/share/doc/libdvdread4/install-css.sh

More information at: https://help.ubuntu.com/community/RestrictedFormats/PlayingDVDs

Overclocking ATI cards

http://www.overclock.net/t/517861/how-to-overclocking-ati-cards-in-linux

This post gives a nice tutorial on overclocking you ati card, basically do

aticonfig --od-enable
aticonfig --odgc
aticonfig --odsc=800,900
aticonfig --odgc

Should reflect the new over clock setting.