For all those speculating on buying Snow Leopard: So I installed Snow Leopard on my two year old MacBook Pro (which was previously running Tiger than Leopard) and this was THE BEST UPGRADE EVER. 1. Apps are literally opening 2-4 times faster and respond a lot quicker (on Startup in Leopard, Safari took 5 bounces to open and literally 6-8 additional seconds to open my homepage, Google.com). In Snow, it takes Safari two bounces, and opens my homepage instantly. 2. Animations, dock magnification and minimizing, were choppy in Leopard (they were smooth in Tiger). Now, animations are smooth as they should be (there is a thread about this). 3. I have an Exchange account, all I did in Mail was type my Email address/password and clicked "Continue" - 5 seconds later, it recognized my account as Exchange, and set everything up. IF YOU HAVE AN EXCHANGE ACCOUNT, SNOW LEOPARD IS WORTH $30 ALONE Apple really does make everything idiot proof. In sum, the speed performance in apps is significantly noticeable in Snow Leopard (I thought it wouldn't be, but it is). Minor new features are a nice icing on the cake and Exchange support is great (no need for any slow MS Products). If you were on the edge on spending $30 for an upgrade, I'd say go for it if you use your Mac a lot (using it more than 1-2 hours a day). If there is another thread like this, please delete this.