My two tricks with my laptop. First, my laptop can not use Down arrow key. In windows, i am using key teak to change key map postion. In my ubuntu ( I am using ubuntu 11.04 32bit because i don`t want intsall GNOME to use ubunto classic), i used xmodmap: 1. Get key map: #xmodmap -pke > output.tmp 2. Use editor to find: line key code error, in my case is 135, and key you will replace it, i a using context menu, key code 116. Change replace key code line keycode 116 = Down NoSymbol Down 3. Apply configuration: #cat output.tmp | xmodmap - but it only used with your session. And this command to startup 4. Edit ~/user/.bashrc Add cat output.tmp | xmodmap - to end of file, save Second, my laptop have 4gbRam, and i am using 32bit, so i can get only 3gb Ram. To get full 4gb, i changed my kernel to server kernel: #sudo apt-get install linux-headers-server linux-image-server linux-server Restart machine. And you will get full RAM --------------------------------