config ubuntu

My laptop has little resources(Thinkpad T41) so I need to shut down all the desktop effect as follows:
1. Don't use compiz.
2. gconf-editor:
1)/apps/panel/toplevels, for all the panel, clear "enable_animations"
2)/apps/metacity/general, mark "reduced_resources"
3)/apps/panel/global, clear "enable_animations"
4)/desktop/genome/interface, mark "accessibility"
3. sudo vim ~/gtkrc-2.0, add: gtk-menu-popup-delay = 0
4. (important)
sudo vim /etc/hosts:
change: 127.0.0.1 localhost
127.0.1.1 your-laptop
to: 127.0.0.1 localhost your-laptop
127.0.1.1 your-laptop
5. sudo vim /etc/default/console-setup
ACTIVE_CONSOLES="/dev/tty[1-6]" -> ACTIVE_CONSOLES="/dev/tty[1-2]"
cd /etc/event.d/
for each tty3-tty6, comment lines start with "start on runlevel".