upon upgrade from postgresql-8.1 to 8.3 with
pg_upgradecluster 8.1 main
the postgis-database was totally broken.
In my case, it was only a dump of the openstreetmap-database of bavaria,
so I recreated it and it works now. I however had to execute
/usr/share/postgresql-8.3-postgis/lwpostgis.sql to get it running
before I could use osm2pgsql again successfully.
I still have the original database around in case you would like to have
a look at it.
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