So far, the bad:
Bluetooth doesn't work, looks like there's no driver and blued constantly starts up and crashes.
I installed on battery, despite warnings, after using it for a while I guess it went flat but it suddenly shut the system down without any low battery warnings.
As with any new install spotlight indexing really kills the machine for a while, after installing developer tools the fan ran full for some time as a result
Microsoft Office X seems to have trouble, first time it just crashed before coming up. Second time it put up a window and then hangs.
NeoOffice also starts up but won't open a document or quit.
iChat has some problems with my buddy list from AOL, the same names appear several times for me.
The previous local build of python doesn't run:
"marxy:~ marksp$ python
-bash: /Users/marksp/ivms/bin/python: cannot execute binary file"
I guess it needs to be recompiled. Fair enough I guess.
My photos in iPhoto all look blurred for some reason in thumbnail size
All work: FireFox, BBEdit, TextMate, Komodo, Adium, OmniGraffle, GraphicConverter, iStumbler, SoundStudio, Yojimbo, Interarchy, MS RDC, Skype (as long as you don't try video),
I'm seeing some Font problems
The good,
Mail is really great, seems super fast
Spotlight much more responsive, no pauses as you type
Safari seems faster and now has that styled text editor as in FireFox (used in blogger for example)
New Finder, not as new as I had expected, seems solid and sensible.
Coverflow everywhere, yeah, whatever..
Quickview is useful I think, certainly seems fast.
Time Machine looks like it works really, really well.