Well, the easiest way is save time when you boot your computer!
Whenever Ubuntu boots it runs several scripts that start necessary background services. By default these are set to run one-by-one but if you have a processor with more than one core, such as Intel’s CoreDuo series or AMD’s Athlon X2, you can configure Ubuntu to run the scripts
in parallel. This way all the cores are utilized and quite a bit of time can be saved at each boot. To make the change, type the following to open the necessary configuration file in Gedit:
$ gksu gedit /etc/init.d/rc
Look for the line that reads CONCURRENCY=none and change it so it reads CONCURRENCY=shell.
Then save the file and reboot your computer. This should save you several seconds of time every time you boot up, and you can go on being a handsome speedy devil