I admit I got a wee bit nervous, when the Snow Leopard installer said I couldn’t install onto the hard drive, because it isn’t bootable: I’d simply forgotten to reboot after uninstalling PGP the other day. Whew! First impression: Snow Leopard is a good deal faster, and has cleaned away quite a bit of cruft. A df -h (disk free) before and after, is quite impressive:

    Filesystem      Size   Used  Avail Capacity  Mounted on
    /dev/disk0s2   298Gi  258Gi   39Gi    87%    /
    /dev/disk0s2   298Gi  247Gi   51Gi    83%    /
    

I can always use the 12 Gig. (Note: this is correct: the new version is smaller than the old!)