Can't connect to database (zabbix 1.4)

[tronite]

If I simply browse 127.0.0.1 then I get follow:
"Index of /
[ICO] Name Last modified Size Description
[DIR] apache2-default/ 20-Nov-2004 23:16 -
Apache/2.2.3 (Ubuntu) PHP/5.2.1 Server at 127.0.0.1 Port 80"

After I open apache2-default directory and see words "It works!"

-... so do you mean it works now?

[selectron]

-... so do you mean it works now?

I think that it's apache2. It works.

[selectron]

It is ridiculous, but I have trouble with DB connection again.
At fourth stage installation in browser window I try to test DB connection. But I see error:
" * pg_pconnect() [function.pg-pconnect]: Unable to connect to PostgreSQL server: fe_sendauth: no password supplied[/var/www/zabbix/include/db.inc.php:60]
* Error connecting to database
"

In file /var/www/zabbix/include/db.inc.php:60 there are lines:
" global $DB, $DB_TYPE, $DB_SERVER, $DB_DATABASE, $DB_USER, $DB_PASSWORD;

$DB_TYPE ="PostgreSQL";
$DB_SERVER ="127.0.0.1";
$DB_DATABASE ="zabbix";
$DB_USER ="zabbix";
$DB_PASSWORD ="";
"
In installation process in browser window I write:
Type: PostgreSQL
Host: 127.0.0.1
Name: zabbix
User: zabbix
No password.

What can I do for decision?

Sorry for my English.