Installation was not pos specific problems.
No incompatibility MAC (PC that's another story ...).

ADQUATION / PERFORMANCE

I tourn Protools on a Mac equipped with an Intel Core Duo with 2GB RAM.
The software works.
It's long loading unlike other apps (see Acid Pro).
The configuration with Mbox 2 is stable.

NOTICE GLOBAL

I used 4 months, I had enough ...
Why essay? Because everyone swears by Protools ... Why? That's a good question, I have not found the answer ...
MIDI management, I prefer to avoid talking about the same VST (vitons the fcheux subjects).
The effects are good quality still happy for the price we pay. Honestly I do not see any advantage over other apps of the same level (see Cubase).
I confess I do not understand this vritablement mania swear by Protools. Considering the prices pratiqus Digidesign Protools and reputation, I am very trsdus.

What is the interest to work with a hardware / software more expensive than the competition and really better?