I have repeated freezes, too.
Looks like a few problems too much for my liking.
First I could not obtain a license via online activation. No internet connection. Well, everything else worked fine using my internet connection. When I tried to obtain an offline license, the eLicense programm froze when I tried to save the license to a file. I deinstalled Spybot S&D and stopped my security system, even killing it to the last process. To no avail.
Copy&paste did the trick.
I started the game, and during the first training mission I get repeated freezes.
I disabled EAX --> freeze. I disabled shadows --> freeze. Once I had a CTD.
I have up to date drivers and stopped all unnessecary tasks before launching the game.
Now, after more than two hours of mounting frustration, I will call it quit and wait for the first few patches.
You know, there are other recent games out there that just work like a charme...
See ya in a couple of weeks!