I've seem more than a few threads on this Question. So lets settle it once and for all. Panther is a huge upgrade! Well worth the money. Don't be fooled that those couple cool features they've added are all that's there. It's got allot more. Just mine the depths of the Panther website and you will all be surprised what's there they are not making a big deal about. Because I think there are lots of little (but important) features you don't hear about from reading the front-line stories. When you just skim the major features (exposé, user switching) and call it a wrap, it does seem like a wimpy upgrade. But they did allot more under the hood of Panther. Here's some good stuff I found: http://www.apple.com/macosx/upgrade/compare.html This list is very interesting. http://www.apple.com/macosx/techspecs/ If you go here, look at all the links under "Included Applications" and "Featured Technologies". In those pages, on the right hand side, all the news features in Panther are listed for them. I certainly found some cool stuff I didn't know about.