Speed launch your Ubuntu using the following steps
Stop unnecessary Applications and Services that start automatically at boot time.
First Stop the unnecessary softwares that starts at boot time.
System -> Preferences -> Applications startup, a window like the following,
Safely de-select the applications that you want are not started automatically, when you have finished click "Close."
Cancel the automatic start of unnecessary services
Go to System -> Administration -> Services and click in the unlock when prompted to enter the password
Now de-select the services that you don't need at start time.
You can de-select the following
1. Power Management (acpid) - only useful if you use a laptop or a Netbook.
2. Bluetooth device management (blutooth) - you can disable if you do not have bluetooth.
3. Management shortcut keys (hotkey-setup) - if you do not use shortcuts on the keyboard you can disable it.
4. Management Braille display - if you do not need the Braille display so you can disable.
after this click on "Close."