Here’s a list of 11 Ways to Optimize Your Mac’s Performance from LowEndMac.com
1. Clean out Startup Items
2. Turn off Universal Access, Bluetooth, Speech Recognition, and Internet Sharing if You Don’t Use Them
3. Clean Out ‘Other’ System Preferences
4. Check Out What ‘Build’ Your Software Is
5. Clean Out Unnecessary Code
6. Get Rid of Languages and Translations You Won’t Use
7. Cool Off
8. Evaluate Your Widgets
9. Keep an Eye on Activity Monitor
10. Clean Off Your Hard Drive
11. Run OnyX
Find out more: LowEndMac.com
Everyone should backup, else it would be very painful to lose all the data on your system. I managed to stumble upon this software, and thought I must as well feature it here, Cheers.
iBackup is a simple to use backup/restore utility.
iBackup supports scheduled backups of files, folders and applications. Further, it uses plugins to backup your settings like the dock, deskop picture, time, firewall, bluetooth and other system preferences. It is also able to backup Application Settings
You can add, delete and edit these plugins.
http://www.grapefruit.ch/iBackup/