Index: install/install_toolkit.php
===================================================================
--- install/install_toolkit.php	(revision 13333)
+++ install/install_toolkit.php	(working copy)
@@ -490,7 +490,7 @@
 		function SaveConfig($silent = false)
 		{
 			if (!is_writable($this->INIFile) && !is_writable(dirname($this->INIFile))) {
-				trigger_error('Cannot write to "' . $this->INIFile . '" file.', $silent ? E_USER_NOTICE : E_USER_ERROR);
+				trigger_error('Cannot write to "' . $this->INIFile . '" file.', $silent ? E_USER_WARNING : E_USER_ERROR);
 				return ;
 			}
 
Index: kernel/db/db_event_handler.php
===================================================================
--- kernel/db/db_event_handler.php	(revision 13329)
+++ kernel/db/db_event_handler.php	(working copy)
@@ -462,7 +462,7 @@
 			if ($this->Application->isDebugMode()) {
 				$this->Application->Debugger->appendTrace();
 			}
-			trigger_error('ItemLoad Permission Failed for prefix [' . $event->getPrefixSpecial() . '] in <strong>checkItemStatus</strong>, leading to "404 Not Found"', E_USER_WARNING);
+			trigger_error('ItemLoad Permission Failed for prefix [' . $event->getPrefixSpecial() . '] in <strong>checkItemStatus</strong>, leading to "404 Not Found"', E_USER_NOTICE);
 
 			header('HTTP/1.0 404 Not Found');
 
@@ -532,7 +532,7 @@
 						$this->Application->Debugger->appendTrace();
 					}
 
-					trigger_error('ItemLoad Permission Failed for prefix ['.$event->getPrefixSpecial().'] in <strong>'.($status_checked ? 'checkItemStatus' : 'CheckPermission').'</strong>', E_USER_WARNING);
+					trigger_error('ItemLoad Permission Failed for prefix ['.$event->getPrefixSpecial().'] in <strong>'.($status_checked ? 'checkItemStatus' : 'CheckPermission').'</strong>', E_USER_NOTICE);
 					$template = $this->Application->isAdmin ? 'no_permission' : $this->Application->ConfigValue('NoPermissionTemplate');
 
 					if (MOD_REWRITE) {
@@ -1173,12 +1173,12 @@
 		 * @access protected
 		 */
 		function OnUpdate(&$event)
-		{			
+		{
 			if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1)) {
 				$event->status = erFAIL;
 				return;
 			}
-			
+
 			$object =& $event->getObject( Array('skip_autoload' => true) );
 
 			$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
Index: kernel/db/db_tag_processor.php
===================================================================
--- kernel/db/db_tag_processor.php	(revision 13332)
+++ kernel/db/db_tag_processor.php	(working copy)
@@ -86,7 +86,7 @@
 		$separator = $this->Application->ParseBlock($block_params);
 		$filter_menu = $this->Application->getUnitOption($this->Prefix,'FilterMenu');
 		if (!$filter_menu) {
-			trigger_error('<span class="debug_error">no filters defined</span> for prefix <b>'.$this->Prefix.'</b>, but <b>DrawFilterMenu</b> tag used', E_USER_WARNING);
+			trigger_error('<span class="debug_error">no filters defined</span> for prefix <b>'.$this->Prefix.'</b>, but <b>DrawFilterMenu</b> tag used', E_USER_NOTICE);
 			return '';
 		}
 
@@ -147,7 +147,7 @@
 	{
 		$refresh_intervals = $this->Application->ConfigValue('AutoRefreshIntervals');
 		if (!$refresh_intervals) {
-			trigger_error('<span class="debug_error">no filters defined</span> for prefix <strong>'.$this->Prefix.'</strong>, but <strong>DrawAutoRefreshMenu</strong> tag used', E_USER_WARNING);
+			trigger_error('<span class="debug_error">no refresh intervals defined</span> for prefix <strong>'.$this->Prefix.'</strong>, but <strong>DrawAutoRefreshMenu</strong> tag used', E_USER_NOTICE);
 			return '';
 		}
 
@@ -2468,7 +2468,7 @@
 		$title_presets = $this->Application->getUnitOption($this->Prefix, 'TitlePresets');
 
 		if (!array_key_exists($preset_name, $title_presets)) {
-			trigger_error('Title preset not specified or missing (in tag "<strong>' . $this->getPrefixSpecial() . ':' . __METHOD__ . '</strong>")', E_USER_WARNING);
+			trigger_error('Title preset not specified or missing (in tag "<strong>' . $this->getPrefixSpecial() . ':' . __METHOD__ . '</strong>")', E_USER_NOTICE);
 			return false;
 		}
 
Index: kernel/db/dblist.php
===================================================================
--- kernel/db/dblist.php	(revision 13329)
+++ kernel/db/dblist.php	(working copy)
@@ -562,7 +562,7 @@
 			$debugger->appendTrace();
 		}
 
-		trigger_error('Depricated method <b>kDBList->SetWhereClause</b>. Use <b>kDBList->addFilter</b> instead.', E_USER_ERROR);
+		trigger_error('Depricated method <b>kDBList->SetWhereClause</b>. Use <b>kDBList->addFilter</b> instead.', defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_NOTICE);
 	}
 
 	/**
@@ -647,7 +647,7 @@
 		}
 
 		if (!isset($this->Fields[$field]) && $field != 'RAND()' && !$is_expression) {
-			trigger_error('<span class="debug_error">Incorrect sorting</span> defined (field = <b>'.$field.'</b>; direction = <b>'.$direction.'</b>) in config for prefix <b>'.$this->Prefix.'</b>', E_USER_WARNING);
+			trigger_error('<span class="debug_error">Incorrect sorting</span> defined (field = <b>'.$field.'</b>; direction = <b>'.$direction.'</b>) in config for prefix <b>'.$this->Prefix.'</b>', E_USER_NOTICE);
 		}
 
 		$this->OrderFields[] = Array($field, $direction, $is_expression);
Index: kernel/event_manager.php
===================================================================
--- kernel/event_manager.php	(revision 13329)
+++ kernel/event_manager.php	(working copy)
@@ -283,7 +283,7 @@
 				$unit_config_reader->loadConfig($event->Prefix);
 				if( !$this->Application->prefixRegistred($event->Prefix) )
 				{
-					trigger_error('Prefix <b>'.$event->Prefix.'</b> not registred (requested event <b>'.$event->Name.'</b>)', E_USER_NOTICE);
+					trigger_error('Prefix <b>'.$event->Prefix.'</b> not registred (requested event <b>'.$event->Name.'</b>)', E_USER_WARNING);
 					return false;
 				}
 			}
Index: kernel/utility/http_query.php
===================================================================
--- kernel/utility/http_query.php	(revision 13329)
+++ kernel/utility/http_query.php	(working copy)
@@ -121,7 +121,7 @@
 			foreach ($this->specialsToRemove as $prefix_special => $flag) {
 				if ($flag && strpos($prefix_special, '.') === false) {
 					unset($this->specialsToRemove[$prefix_special]);
-					trigger_error('Incorrect usage of "<strong>remove_specials['.$prefix_special.']</strong>" field (no special found)', E_USER_WARNING);
+					trigger_error('Incorrect usage of "<strong>remove_specials['.$prefix_special.']</strong>" field (no special found)', E_USER_NOTICE);
 				}
 			}
 			$this->_Params = $this->removeSpecials($this->_Params);
Index: kernel/utility/unit_config_reader.php
===================================================================
--- kernel/utility/unit_config_reader.php	(revision 13329)
+++ kernel/utility/unit_config_reader.php	(working copy)
@@ -519,7 +519,7 @@
 		if (is_array($hooks) && count($hooks) > 0) {
 			foreach ($hooks as $hook) {
 				if (isset($config['ParentPrefix']) && $hook['HookToPrefix'] == $config['ParentPrefix']) {
-					trigger_error('Depricated Hook Usage [prefix: <b>'.$config['Prefix'].'</b>; do_prefix: <b>'.$hook['DoPrefix'].'</b>] use <b>#PARENT#</b> as <b>HookToPrefix</b> value, where HookToPrefix is same as ParentPrefix', E_USER_NOTICE);
+					trigger_error('Depricated Hook Usage [prefix: <b>'.$config['Prefix'].'</b>; do_prefix: <b>'.$hook['DoPrefix'].'</b>] use <b>#PARENT#</b> as <b>HookToPrefix</b> value, where HookToPrefix is same as ParentPrefix', defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_NOTICE);
 				}
 
 				if ($hook['HookToPrefix'] == '') {
@@ -558,7 +558,7 @@
 			foreach ($config['AggregateTags'] as $aggregate_tag) {
 				if (isset($config['ParentPrefix'])) {
 					if ($aggregate_tag['AggregateTo'] == $config['ParentPrefix']) {
-						trigger_error('Depricated Aggregate Tag Usage [prefix: <b>'.$config['Prefix'].'</b>; AggregateTo: <b>'.$aggregate_tag['AggregateTo'].'</b>] use <b>#PARENT#</b> as <b>AggregateTo</b> value, where AggregateTo is same as ParentPrefix', E_USER_NOTICE);
+						trigger_error('Depricated Aggregate Tag Usage [prefix: <b>'.$config['Prefix'].'</b>; AggregateTo: <b>'.$aggregate_tag['AggregateTo'].'</b>] use <b>#PARENT#</b> as <b>AggregateTo</b> value, where AggregateTo is same as ParentPrefix', defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_NOTICE);
 					}
 
 					if ($aggregate_tag['AggregateTo'] == '#PARENT#') {
Index: units/helpers/custom_fields_helper.php
===================================================================
--- units/helpers/custom_fields_helper.php	(revision 13329)
+++ units/helpers/custom_fields_helper.php	(working copy)
@@ -46,7 +46,7 @@
 					$this->Application->Debugger->appendTrace();
 				}
 
-				trigger_error('Invalid symbol in ValueList field [' . substr($values_list, 0, 100) . ' ...]' , E_USER_NOTICE);
+				trigger_error('Invalid symbol in ValueList field [' . substr($values_list, 0, 100) . ' ...]' , E_USER_WARNING);
 				return Array ();
 			}
 
Index: units/helpers/sections_helper.php
===================================================================
--- units/helpers/sections_helper.php	(revision 13329)
+++ units/helpers/sections_helper.php	(working copy)
@@ -229,7 +229,7 @@
 				$current_data = isset($this->Tree[$section_name]) ? $this->Tree[$section_name] : Array();
 
 				if ($current_data) {
-					trigger_error('Section "<strong>' . $section_name . '</strong>" declaration (originally defined in "<strong>' . $current_data['SectionPrefix'] . '</strong>") was overwriten from "<strong>' . $prefix . '</strong>"', E_USER_NOTICE);
+					trigger_error('Section "<strong>' . $section_name . '</strong>" declaration (originally defined in "<strong>' . $current_data['SectionPrefix'] . '</strong>") was overwriten from "<strong>' . $prefix . '</strong>"', E_USER_WARNING);
 				}
 
 				$this->Tree[$section_name] = array_merge_recursive2($current_data, $section_params);