I just replaced a 1GB RAM stick in my 2007-era Macbook Pro with a 2GB RAM stick. It already had Mountain Lion installed on it.
Is there anything I need to do like configuring something in System Preferences or running a command in Terminal in order to make sure all applications and behind-the-scenes stuff take advantage of the increased RAM?
I'm asking with the assumption that some applications might have made a note of the machine's original amount of RAM when the app was installed, and may still be optimizing itself to the old RAM amount.