Installed The Tiger WWDC Preview on my Sawtooth G4 Dev machine - 400Mhz - 640Mb Ram. Unbearably slow. I mean unbearable! Then installed on my TiBook 800. Better, but still slow and buggy. The Dashboard special effects don't work with my Gfx card (Radeon 7500M 32Mb) - unfortunately they need a DX9 card (like the CoreImage requirements). Now, whilst typing in Safari my fans are on overdrive. Some disgusting graphics errors in menus. Live resizing is definitely much better but not perfect. Dashboard is F12 to activate (programmable). Search (spotlight) feature is cool but doesn't work as advertised yet. No, you can't type "find presentations that Phil gave me last week", or anything of the sort yet. More like "presentation phil this month". Type Apple into the search and it gives you all of Apple's Apps. No Automater in this build - but Pipeline (in the Applescript folder). Spotlight in Sys Prefs is very laggy. Very hard to change volume in the dashboard itunes gadget (yes, in this build they are called Gadgets), and the gadget takes about 6 seconds to recognise itunes is open and playing. Some gadgets you can open more than one of (stickies, etc.), others not. Cool setup assistant - transfer files & settings from previous mac over firewire, cube transition for all the pages. Smart folders are kept in ~/Saved Searches Font smoothing has changed again with this release - more red/green pixels visible for me. Slight pause (understandable) when opening a smart folder. That's all for now, will put up a screenshot or two.