I am running a 1.33Ghz iBook G4 with 1GB of Ram, so my laptop is definitely up to the requirements. I have a few concerns about upgrading, though. - Apple says that Leopard requires 9.x GB of space. Is this on top of the space that Tiger takes up? I only have 10GB free on my 60GB hard drive. Of course, I don't have a need for any of the localization files and stuff. - I really want a macbook, but A. I don't see it happening anytime in the near future and b. I don't really NEED it, since I'm not really doing anything that taxing right now. I'm basically doing student work and word processing. I did photography for a while that could have used a macbook, and I love it, but I decided that I would wait a couple of years since I have too much to do and spend money on right now to do/fund an expensive hobby like photography. So I don't really need a new laptop, but if I ended up getting Leopard for my ibook, and then getting a macbook for say, Christmas or something, that would kind of suck since I just spent 129 bucks I didn't have to (or whatever it is with EDU pricing...) The reason I want to upgrade is not really because of features, although the new UI and Finder etc. look extremely nice. What I'm most concerned about is losing support of my favorite freeware, etc. Do you know when developers start to require the next incremental release of OS X, because I am finding freeware day after day that I use. So, is it worth it to upgrade to leopard, or would my money be better spent on something different, like a backup HD, as I'm always paranoid that one day my data is going to get flushed down the drain and I'm not serious enough about backing up. Leopard would be nice, but should I be worried about upgrading just yet?