Index: branches/5.1.x/install/upgrades.sql
===================================================================
diff -u -N -r13820 -r13958
--- branches/5.1.x/install/upgrades.sql	(.../upgrades.sql)	(revision 13820)
+++ branches/5.1.x/install/upgrades.sql	(.../upgrades.sql)	(revision 13958)
@@ -199,4 +199,13 @@
 
 # ===== v 5.1.0-RC1 =====
 
-# ===== v 5.1.0 =====
\ No newline at end of file
+# ===== v 5.1.0 =====
+
+# ===== v 5.1.1-B1 =====
+ALTER TABLE PollsComments CHANGE CreatedById CreatedById INT(11) NULL DEFAULT NULL;
+
+ALTER TABLE Topic
+	CHANGE OwnerId OwnerId INT( 11 ) NULL DEFAULT NULL ,
+	CHANGE ModifiedById ModifiedById INT( 11 ) NULL DEFAULT NULL;
+
+UPDATE Topic SET ModifiedById = NULL WHERE ModifiedById = 0;
\ No newline at end of file
Index: branches/5.1.x/units/private_messages/private_messages_config.php
===================================================================
diff -u -N -r13577 -r13958
--- branches/5.1.x/units/private_messages/private_messages_config.php	(.../private_messages_config.php)	(revision 13577)
+++ branches/5.1.x/units/private_messages/private_messages_config.php	(.../private_messages_config.php)	(revision 13958)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: private_messages_config.php 13577 2010-05-19 07:24:12Z alex $
+* @version	$Id: private_messages_config.php 13958 2010-09-25 18:34:41Z alex $
 * @package	In-Bulletin
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -96,7 +96,9 @@
 
 		'VirtualFields' => Array (
 			'FromName' => Array ('type' => 'string', 'default' => ''),
+			'FromFullName' => Array ('type' => 'string', 'default' => ''),
 			'ToName' => Array ('type' => 'string', 'default' => ''),
+			'ToFullName' => Array ('type' => 'string', 'default' => ''),
 			'Subject' => Array ('type' => 'string', 'default' => ''),
 			'Body' => Array ('type' => 'string',  'required' => 1, 'default' => ''),
 			'Options' => Array ('type' => 'string', 'default' => 0),
Index: branches/5.1.x/units/topics/topics_config.php
===================================================================
diff -u -N -r13937 -r13958
--- branches/5.1.x/units/topics/topics_config.php	(.../topics_config.php)	(revision 13937)
+++ branches/5.1.x/units/topics/topics_config.php	(.../topics_config.php)	(revision 13958)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: topics_config.php 13937 2010-09-14 09:11:00Z alex $
+* @version	$Id: topics_config.php 13958 2010-09-25 18:34:41Z alex $
 * @package	In-Bulletin
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -243,7 +243,7 @@
 					),
 
 					'FilterMenu'		=>	Array (
-						'Groups' => Array (													
+						'Groups' => Array (
 							Array ('mode' => 'AND', 'filters' => Array ('show_new'), 'type' => HAVING_FILTER),
 							Array ('mode' => 'AND', 'filters' => Array ('show_hot'), 'type' => HAVING_FILTER),
 							Array ('mode' => 'AND', 'filters' => Array ('show_pop'), 'type' => HAVING_FILTER),
@@ -390,7 +390,7 @@
 			            	'left_key_field' => 'PortalUserId',
 			            	'left_title_field' => 'Login',
 			            	'error_msgs' => Array ('invalid_option' => '!la_error_UserNotFound!'),
-			            	'required' => 1, 'not_null' => 1, 'default' => USER_ROOT,
+			            	'required' => 1, 'default' => NULL,
 						),
 			            'ModifiedById'			=> Array (
 			            	'type' => 'int',
@@ -401,7 +401,7 @@
 			            	'left_key_field' => 'PortalUserId',
 			            	'left_title_field' => 'Login',
 			            	'error_msgs' => Array ('invalid_option' => '!la_error_UserNotFound!'),
-			            	'required' => 1, 'not_null' => 1, 'default' => USER_ROOT,
+			            	'required' => 1, 'default' => NULL,
 						),
 			            'ResourceId'			=>	Array ('type' => 'int', 'default' => null),
 			            'TopicType'				=>	Array (
@@ -462,8 +462,11 @@
 							'options' => Array (),
 							'default' => 0,
 						),
-						'Filename' => Array ('type' => 'string', 'not_null' => 1, 'default' => ''),
+						'Filename' => Array ('type' => 'string', 'default' => ''),
+						'CategoryFilename' => Array ('type' => 'string', 'default' => ''),
+						'PrimaryCat' => Array ('type' => 'int', 'default' => 0),
 						'CachedNavbar' => Array ('type' => 'string', 'default' => ''),
+						'ParentPath' => Array ('type' => 'string', 'default' => ''),
 
 						'LastPoster' => Array ('type' => 'string', 'default' => ''),
 						'LastPosterId' => Array ('type' => 'int', 'default' => USER_GUEST),
Index: branches/5.1.x/units/poll_comments/poll_comments_config.php
===================================================================
diff -u -N -r13577 -r13958
--- branches/5.1.x/units/poll_comments/poll_comments_config.php	(.../poll_comments_config.php)	(revision 13577)
+++ branches/5.1.x/units/poll_comments/poll_comments_config.php	(.../poll_comments_config.php)	(revision 13958)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: poll_comments_config.php 13577 2010-05-19 07:24:12Z alex $
+* @version	$Id: poll_comments_config.php 13958 2010-09-25 18:34:41Z alex $
 * @package	In-Bulletin
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -64,7 +64,7 @@
 		    						'options' => Array(USER_ROOT => 'root', USER_GUEST => 'Guest'),
 		    						'left_sql' => 'SELECT %s FROM '.TABLE_PREFIX.'PortalUser WHERE `%s` = \'%s\'',
 		    						'left_key_field' => 'PortalUserId', 'left_title_field' => 'Login',
-		    						'required' => 1, 'not_null' => 1, 'default' => USER_GUEST),
+		    						'required' => 1, 'default' => NULL),
 		    'GuestName' => Array ('type' => 'string', 'max_len' => 255, 'not_null' => 1, 'default' => ''),
 		    'GuestEmail' => Array('type' => 'string', 'max_len' => 255, 'formatter'=>'kFormatter', 'regexp'=>'/^(' . REGEX_EMAIL_USER . '@' . REGEX_EMAIL_DOMAIN . ')$/i', 'sample_value' => 'email@domain.com', 'not_null' => '1', 'default' => '', 'error_msgs' => Array('invalid_format'=>'!la_invalid_email!', 'unique'=>'!lu_email_already_exist!'),'required' => 0 ),
 		    'CommentBody' => Array ('type' => 'string', 'formatter' => 'kFormatter', 'using_fck' => 1, 'default' => NULL, 'required' => 1),
Index: branches/5.1.x/units/posts/posts_config.php
===================================================================
diff -u -N -r13577 -r13958
--- branches/5.1.x/units/posts/posts_config.php	(.../posts_config.php)	(revision 13577)
+++ branches/5.1.x/units/posts/posts_config.php	(.../posts_config.php)	(revision 13958)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: posts_config.php 13577 2010-05-19 07:24:12Z alex $
+* @version	$Id: posts_config.php 13958 2010-09-25 18:34:41Z alex $
 * @package	In-Bulletin
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -99,7 +99,7 @@
 			'DisableBBCodes' => Array ('type' => 'int', 'formatter' => 'kOptionsFormatter', 'options' => Array (1 => 'la_Yes', 0 => 'la_No'), 'use_phrases' => 1, 'default' => 0),
 			'DisableSmileys' => Array ('type' => 'int', 'formatter' => 'kOptionsFormatter', 'options' => Array (1 => 'la_Yes', 0 => 'la_No'), 'use_phrases' => 1, 'default' => 0),
 			'ShowSignatures' => Array ('type' => 'int', 'formatter' => 'kOptionsFormatter', 'options' => Array (0 => 'la_No', 1 => 'la_Yes'), 'use_phrases' => 1, 'default' => 1),
-
+			'UserName'		 =>	Array ('type' => 'string', 'default' => ''),
 			// for avatar image
 			'AltName'		=>	Array('type' => 'string', 'default' => ''),
 			'SameImages'	=>	Array('type' => 'string', 'default' => ''),
Index: branches/5.1.x/install/install_schema.sql
===================================================================
diff -u -N -r13094 -r13958
--- branches/5.1.x/install/install_schema.sql	(.../install_schema.sql)	(revision 13094)
+++ branches/5.1.x/install/install_schema.sql	(.../install_schema.sql)	(revision 13958)
@@ -34,8 +34,8 @@
   EditorsPick tinyint(4) NOT NULL DEFAULT '0',
   `Status` tinyint(4) unsigned NOT NULL DEFAULT '2',
   Priority int(11) NOT NULL DEFAULT '0',
-  OwnerId int(11) NOT NULL DEFAULT '-1',
-  ModifiedById int(11) NOT NULL DEFAULT '0',
+  OwnerId int(11) DEFAULT NULL,
+  ModifiedById int(11) DEFAULT NULL,
   ResourceId int(11) DEFAULT NULL,
   TopicType int(11) NOT NULL DEFAULT '1',
   CreatedOn int(11) DEFAULT NULL,
@@ -167,7 +167,7 @@
   CommentId int(11) NOT NULL AUTO_INCREMENT,
   PollId int(11) NOT NULL DEFAULT '0',
   AnswerId int(11) DEFAULT NULL,
-  CreatedById int(11) NOT NULL DEFAULT '-2',
+  CreatedById int(11) DEFAULT NULL,
   GuestName varchar(255) NOT NULL DEFAULT '',
   GuestEmail varchar(255) NOT NULL DEFAULT '',
   CommentBody text,