I'm glad to announce we've finally completed migration of our primary source repository to BitBucket.org:
The repository URL is http://hg.x-tensive.com/dataobjects.net (use HTTPS for checkouts).
The repository is private, i.e. you can access it only if you have a permission. If you're owner of Ultimate Edition license (or have any other agreement with our company enabling you to access the repository), please register at BitBucket.org and send us e-mail with the name of your BitBucket account to get the permission.
Note that currently you won't be able to build DataObjects.Net from the source code stored there - you need a license to proprietary .NET Reactor and PostSharp to do this (i.e. more precisely, you can build it, but you need these two additional licenses). But it's quite likely we'll eliminate the need to have at least .NET Reactor license further (i.e. it will be possible to build unprotected builds solely for debug purposes).