Wow, that was quick. Unfortunately some users identified a critical bug in the roster storage in our 0.6.0 release. We’ve identified and fixed the problem as soon as we can, and strongly recommend that everyone running 0.6.0 back up their data directory (as always!) and upgrade to 0.6.1 at the earliest opportunity.
For the original 0.6.0 announcement detailing the new features in this branch, see Prosody 0.6.0 Released.
Source tarball: prosody-0.6.1.tar.gz