I've been trying to get Crashplan to work with OS X to backup files from a MacBook Pro to a local network SMB mount point.

Even though OS X can see the mount point just fine and I can navigate the mount point with the finder, Crashplan fails to connect to the storage device. The Crashplan screen shows the device but fails to make the connection.

If this gets "fixed", Crashplan would be fantastic. But right now I would make sure you have other backup until Crashplan works.