Yes all clusters, run on the same machine. All packages are from pgdg. libpq5 is version 9.3.4-1.pgdg70+1 the problem is still the same, The relevant database is only for testing and development, I will downgrade to 9.1. Thanks for helping. Regards, basti Am 15.07.2014 16:46, schrieb Adrian Klaver: > On 07/15/2014 07:17 AM, basti wrote: >> Hello Adrian, >> >> Yes I use the correct cluster. >> >> password authentication failed for user "testuser" ... >> is a line from the postgres log >> >> Yes I know what "trust" mean. >> >> psql in version 9.3 can connect without error, >> psql in version 9.1 connect to server 9.3 get the same error as above. >> >> I have done the setup. >> And I don't use ADO for this test. >> >> I have also test >> >> Postgres 9.1 and Postgres 9.4 both work with auth-method md5, except >> postgres 9.3 discuss there. > > To follow up on my previous post. > > Are all these clusters running on the same machine? > > Where they all installed from the same source, pgdg, or are they from > different sources? > > I have to go, so I will get back to this later, though I suspect wiser > minds then mine will get you an answer in the interim. > >> >> It takes a round 5 hours to find this "error". >> If anybody has the same problem be warned. >> >> Regards, >> basti >> > >