Bought it the night it became avail. Great features, but too many bugs. Thought it was great at first, but the more I use it, the worse it gets. My computer is completely screwed up since installing Panther. One by one, my preferences have been corrupted. First lost all of my Internet explorer favorites and preferences. Then lost all of my Safari Bookmarks. Then my menu bar reset. Then, my Dock reset to it's original configuration. Now Safari unexpectedly quits any time I try to open it. I've lost countless hours of work reconifguring my computer over and over. I've got a backed up home folder, but when I drag the preferences out of the backed up Library to the current library, they don't get used. They get replaced by new default preferences. Now Safari wont open. I can't fax from MS Word. When choosing "Fax" from the print menu, there is no place to type a phone (fax) number, and if i click the address book icon, it freezes until I click cancel from the print window. Oh well. At least I didn't lose a whole firewire hard drive worth of data! I got VERY lucky that my almost full of video 250GB HD is firewire 400.