My bad, memories fade. It was 5.1.3 then, i think. I remember upgrading the cluster to 5.5 with some pain and fear of data loss, however the concrete version i

My bad, memories fade. It was 5.1.3 then, i think. I remember upgrading the cluster to 5.5 with some pain and fear of data loss, however the concrete version i was upgrading from eludes me.