Our G4 Powerbook 1Ghz (firewire 800) with 1GB of RAM (2 512MB chips) can be a bit slow. We get the spinning beach ball when switching applications. My wife and I use it with two user accounts that we switch back and forth from. The hard drive is quite full (10 gb of free space). Here's my question - Would it make more sense to upgrade the hard drive or the ram? Space isn't an issue since I can take off some files. The current drive is the original 4200rpm. The apps we normally run are mail, quicken, firefox, iphoto. Sometimes I run photoshop but not too often. I'd appreciate your thoughts.