When I goto status page I get
Cluster host authentication failure for Local server: too many connections, try again later
Thanks! A fixed version is up on the download server now.
You should do some kind of downgrade possibillity in case like this one.
Not really practical. If the upgrade involves any database or configuration file changes, it's not practical to undo those, and they'll probably cause an older version to fail if you roll back.
That's why this is called the 'unstable' branch, though.
Once 3.0.0 final is released, changes won't be introduced to the 'stable' branch until they're well-tested on 'unstable', so there should never be a need to roll back.