Recently i had installed 8.2.5 and got "Login failed" issue
Everything except phpPgAdmin was working just fine
(PgAdmin3, PHP scripts, JSP/Java)
I had resolved the issue by giving CONNECT privilege
to template1 for the user i was trying to connect via phpPgAdmin
grant connect on database template1 to "some user";
J.Guillaume (ioguix) de Rorthais
Hum, here a quote from our conf/config.inc.php file :
// Change the default database only if you cannot connect to template1.
// For a PostgreSQL 8.1 server, you need to set this to 'postgres'.
$conf['servers']['defaultdb'] = 'template1';