Hello, I've had a PowerBook G4 for the last 5 years or so, and it's starting to show it's age a little bit. I had to move the memory module into a different slot a couple of months ago because of the infamous faulty buffer chip on the logic board (I'm on my second logic board because of that issue, first one failed under warranty, thank God). The battery, the second one (first one replaced for free during the whole Sony battery fiasco), works for MAYBE an hour, unlike when it was new and I could work for almost 2 hours. The screen is kind of dim, and there are some cosmetic things that come from being a 5 year old computer that I've carried everywhere. I had actually enrolled in a Ph.D program at the University of Maryland, but had a terrible adviser and decided I'm going to go back out into the workforce for a little while. Why do I bother to mention this detail? Well, my student discount powers will be expiring soon, and I'd like to be able to take advantage of them. I visited the school computer store, and asked them if they had any stock of the MBPs from before this last update. They do, but the discount is a measily $100 on top of my 10% student discount. Only occasionally, even with my 5 year-old, 1.5 GHz PowerPC, do I tax the processor on my PowerBook. I don't do things that are high performance. So my question is what, if anything, significant changed with this new update? Was it just the processors? If it was, then I'll buy the last generation. If the battery life improved significantly, or something along those lines, with this new update, then it's probably worth the extra $100 to go with the new generation. Thoughts? Thanks!