Snow Leopard. Even the name seems to underpromise -- it's the first "big cat" OS X codename to reference the previous version of the OS, and the list of big-ticket new features is seemingly pretty short for a version-number jump. Maybe that's why Apple's priced the 10.6 upgrade disc at just $29 -- appearances and expectations matter, and there's simply not enough glitz on this kitty to warrant the usual $129. But underneath the customary OS X fit and finish there's a lot of new plumbing at work here. The entire OS is now 64-bit, meaning apps can address massive amounts of RAM and other tasks go much faster. The Finder has been entirely re-written in Cocoa, which Mac fans have been clamoring for since 10.0. There's a new version of Qui
