Supersite for Windows posted Windows Technical Preview Build 9879: The Morning After
A quote from the article:
This one ain't pretty. So I think it's fair to say that we've taken a major step back in this latest build of the Windows Technical Preview. Obviously, there are some nice improvements here?and the seismic shift that's happening with OneDrive?but the big news here, perhaps, is that this is the first build that isn't stable or reliable enough to use regularly. And unless this is fixed soon, I may have to take the unusual step of moving back to a previous build, or to Windows 8.1.Windows Technical Preview Build 9879: The Morning After @ WinSupersite