Rumors have been circling for months that AquaTerra, a 163 unit 20-story project planned for Barton Springs road between Congress Avenue and south First street, has been having trouble getting off the ground. In fact, the building was supposed to be complete by 2008 -- yet construction hasn't even broken ground.While we have not received any confirmation from the developers, we have heard from other sources that the project is in fact on hold and is unlikely to ever be completed. If true, this represents the first major cancellation of a downtown condo project. While it is easy . . .