Dolphin works but Orca does not

I've installed Dolphin on OS X for testing and it seems
to work fine. However, Orca does not. I'm using:

MySQL 5.0.45
PHP 4.4.8 with XML, XLST, DOM options

The page I get is this:

Could not connect to MySQL database.
Did you properly edit inc/header.inc.php file ?

And naturally, I've checked this file a hundred times. The account and password are fine, and I can access MySQL via my web browser since the rest of Dolphin works. For the sake of being verbose, I will also include the httpd errors below:

[Mon Feb  4 14:11:37 2008] [error] PHP Notice:  Undefined index:  refresh in /Library/WebServer/Documents/dolphin/orca/index.php on line 40
[Mon Feb  4 14:11:37 2008] [error] PHP Notice:  Undefined index:  skin in /Library/WebServer/Documents/dolphin/orca/inc/header.inc.php on line 45
[Mon Feb  4 14:11:37 2008] [error] PHP Notice:  Undefined index:  skin in /Library/WebServer/Documents/dolphin/orca/inc/header.inc.php on line 45
[Mon Feb  4 14:11:37 2008] [error] PHP Warning:  Call-time pass-by-reference has been deprecated - argument passed by value;  If you would like to pass it by reference, modify the declaration of [runtime function name]().  If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file.  However, future versions may not support this any longer.  in /Library/WebServer/Documents/dolphin/orca/classes/Forum.php on line 953
[Mon Feb  4 14:11:37 2008] [error] PHP Warning:  Call-time pass-by-reference has been deprecated - argument passed by value;  If you would like to pass it by reference, modify the declaration of [runtime function name]().  If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file.  However, future versions may not support this any longer.  in /Library/WebServer/Documents/dolphin/orca/classes/Forum.php on line 1024
[Mon Feb  4 14:11:37 2008] [error] PHP Warning:  Call-time pass-by-reference has been deprecated - argument passed by value;  If you would like to pass it by reference, modify the declaration of [runtime function name]().  If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file.  However, future versions may not support this any longer.  in /Library/WebServer/Documents/dolphin/orca/classes/Forum.php on line 1205
[Mon Feb  4 14:11:38 2008] [error] PHP Warning:  Call-time pass-by-reference has been deprecated - argument passed by value;  If you would like to pass it by reference, modify the declaration of [runtime function name]().  If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file.  However, future versions may not support this any longer.  in /Library/WebServer/Documents/dolphin/orca/classes/Login.php on line 152
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Constant TF_FORUM already defined in /Library/WebServer/Documents/dolphin/orca/classes/DbAdmin.php on line 40
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Constant TF_FORUM_CAT already defined in /Library/WebServer/Documents/dolphin/orca/classes/DbAdmin.php on line 41
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Constant TF_FORUM_POST already defined in /Library/WebServer/Documents/dolphin/orca/classes/DbAdmin.php on line 42
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Constant TF_FORUM_TOPIC already defined in /Library/WebServer/Documents/dolphin/orca/classes/DbAdmin.php on line 43
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Undefined index:  orca_user in /Library/WebServer/Documents/dolphin/orca/classes/Forum.php on line 1589
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Undefined index:  orca_pwd in /Library/WebServer/Documents/dolphin/orca/classes/Forum.php on line 1590
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Undefined index:  orca_user in /Library/WebServer/Documents/dolphin/orca/classes/Forum.php on line 1592
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Undefined index:  action in /Library/WebServer/Documents/dolphin/orca/index.php on line 81
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Undefined index:  action in /Library/WebServer/Documents/dolphin/orca/index.php on line 81
[Mon Feb  4 14:11:38 2008] [error] PHP Warning:  mysql_error(): supplied argument is not a valid MySQL-Link resource in /Library/WebServer/Documents/dolphin/orca/classes/BxDb.php on line 222
[Mon Feb  4 14:11:38 2008] [error] PHP Notice:  Undefined index:  debug in /Library/WebServer/Documents/dolphin/orca/classes/Mistake.php on line 78


If anyone has thoughts or suggestions on this, that would be great. Thanks!