A buddy of mine recently switched (an MBP to run just one app. I hate him! ), and the app in question is known stable only up to 10.5.2. Anywho, are the retail copies all still at 10.5.0, or are they slowly "upgraded" to more current releases as time goes on? He'd be pretty cranky if his retail box was 10.5.3. I figure worst case I could swap my original Leopard box for his newer version, but I'm hoping that's not necessary.