I am currently running Nuxeo 5.5 on a Debian 7.2 install (tomcat). I just upgraded Debian from 6.0 to 7.2, and tested the server afterwards to make sure nuxeo still worked. It did.
Then I manually installed postgresql-9.1 and postgresql-client-9.1 and did a drop of the default 9.1 main cluster, and then ran pg_upgradecluster 8.4 main and it successfully upgraded the main cluster.
When I check webmin and look at the database, everything is there. When I try to log into nuxeo, I cannot. What happened?