Ubisoft is moving some of their servers to a new location, next week, so the online functionality of all games except Anno 2070, Assassin's Creed Revelations, Just Dance 3, and Driver: San Francisco will be unavailable beginning on February 7 for an indefinite period of time.
Even better -- because DRM is for the benefit of the legitimate paying customer, you won't be able to play the following games. At all. Not even single-player:
- Assassin's Creed
- H.A.W.X. 2
- Might & Magic: Heroes VI
- Splinter Cell: Conviction
- The Settlers Online
- The Settlers 7: Paths to a Kingdom