Well, figure I would report a successful install, at least on my first Mac.
Computer: 2011 13" 2.7 GHz Macbook Pro 8 gig RAM
Install took quite a while. The original listed time was 33 minutes
but took more like 43 (I know those are just vague estimates).
After reboot, Spotlight indexing took a few minutes. I then proceeded
to do at least some cursory testing of apps (BTW it took my VMware Fusion
3.1.3 and trashed it. No loss, left Fusion behind long ago).
So atleast initially the following apps are functioning without issue:
Adobe Photoshop CS6 and associated apps
CHM View (windows help viewer)
Geekbench (Score was 7711, which is the same it was with Lion)
HandBrake 9.5 x86_64
Microchip MPLABX 1.2 (note mostly JAVA)
Open Office 3.4
Some of these came up with the some unidentified developer
box on first launch (Open Office was one). But all worked
at least wit a quick runthrough. There may be issues after working
heavy duty with them but that remains to be seen.
-Takes a really log time for System Preferences to open the
first time after reboot. Not just the first reboot, after every
reboot. But opens quicly after that.
-I have two hard drives connected to my AEBS. When the
MBP is connected to them, they don't stay asleep until needed.
every 5 or 10 minutes, it is like they get, for lack of a better term,
pinged. They wake for a few seconds then go back to sleep.
When connection is closed, they stay asleep. This was also
an oddity with Lion as well. Did not do it with Snow Leopard,
where they would sleep until actually accessed.
-Using Software Update now opens up the Mac App Store.
Not sure if this will be true for system updates as well.
So, next I am going to attemp updating my 2011 Mini Server
that I am using as a workstation. That one however, I am
going to do a clean install on another partition and migrate
all but server stuff from the original partition. we'll see how
BTW, first things I did, save the Mountain Lion installer itself
to my network storage and created a Mountain Lion installer
on a USB stick.