Finally after buying just the crucial moment the installation.
40 mo file that downloads quickly (for me)
installation is quick, and it is no problem,
Once finished, I start cubase 5 then ez mix 2 and ... foot!
Alienware M14x i7 with windows 7, I also test on an old pc with xp
and software work just as well.
I did not really dwell on this opinion, I prefer to make a video / test, now you be the judge!