Ubisoft's approach to DRM is actually biting the company in the ass with a server transition.

Ubisoft will be transitioning servers on February 7, and because a number of Ubisoft games have DRM linked to Ubisoft’s servers, those games will not be playable.

Some of Ubisoft’s most recent games, including Assassin’s Creed: Revelations and Driver: San Francisco, will not be affected.

“Ubisoft will be transitioning the hosting of many of its online services from a third-party data center to a new facility,” said the company. “During the transition, some Ubisoft services and online games will not be available. We apologize to our customers for the inconvenience. This move ultimately will help us improve the maintenance of our infrastructure and deliver better uptime and greatly improved services for our customers.”

Here’s the list of games that won’t be affected during the transition:

• Anno 2070 -- PC
• Assassin’s Creed: Revelations -- OnLive, PC, PlayStation 3, Xbox 360
• Driver: San Francisco -- OnLive, PC, PS3, 360
• The Settlers Online -- Web-based

Here’s the list of games that will be affected during the transition:

• Assassin’s Creed -- Mac
• Tom Clancy’s H.A.W.X. 2 -- PC
• Might & Magic: Heroes IV -- PC
• Splinter Cell: Conviction -- Mac
• The Settlers 7: Paths to a Kingdom -- PC
• The Settlers -- Mac

It’s unclear how long the server transition will take, with Ubisoft asking players to to follow its Twitter account.

None of this would be a problem if Ubisoft's games didn't have DRM, obviously.