FYI: Your MacBook Pro should have 4GB of RAM
Any sort of hacker should really have 4GB... buying two 2GB only costs about $60, and it's as simple as two screws, removing the old RAM, and popping the chips in to upgrade.
So, if you have a 2GB MacBook Pro, it's time to upgrade. You'll immediately notice the difference.
EDIT: The commenter was right, I did put in two 2GB chips to replace 2 1GB chips. It does cost about $60 bucks for both chips.