Looks like there's a permissions bug in the postgresql backup when using the new backup format:
Dumping PostgresSQL database ipython ..
.. dump failed!
pg_dump: [custom archiver] could not open archive file "/home/ipython/.backup/ipython.scipy.org_postgres_ipython": Permission denied
It works fine when using the old backup format (I guess it goes to /tmp where permissions are different?).
Status:
Closed (fixed)