There's a From Dust PC Official Statement on the Ubisoft Forums
announcing a change to the god game's DRM after the recent dust up
over it requiring online authentication every time it is launched. Here's word saying this requirement will be removed within a couple of weeks:
We recognize that one of our posts in the From Dust forum regarding the need for authentication in the game was not clear. We sincerely apologize for the misunderstanding. Our tech teams are working on a patch that should release in approximately two weeks that will eliminate the need for any online authentication. This development time is required as we are working to ensure that those who have already started the game, and who’s progress is currently saved on our servers, will receive and save their game information locally. Once the patch is ready, players who already have the game will automatically receive the update on their next login and subsequent game sessions will be 100% offline.