Index: kernel/application.php
===================================================================
--- kernel/application.php	(revision 13756)
+++ kernel/application.php	(working copy)
@@ -1383,9 +1383,9 @@
 		$this->Session->StoreVar($var, $val, $optional);
 	}
 
-	function StorePersistentVar($var, $val)
+	function StorePersistentVar($var, $val, $optional = false)
 	{
-		$this->Session->StorePersistentVar($var, $val);
+		$this->Session->StorePersistentVar($var, $val, $optional);
 	}
 
 	function StoreVarDefault($var, $val, $optional=false)
Index: kernel/db/db_event_handler.php
===================================================================
--- kernel/db/db_event_handler.php	(revision 13756)
+++ kernel/db/db_event_handler.php	(working copy)
@@ -926,18 +926,11 @@
 
 				if ($per_page) {
 					// per-page found in request -> store in session and persistent session
-					$this->Application->StoreVar($event->getPrefixSpecial() . '_PerPage', $per_page, true); //true for optional
-					$this->Application->StorePersistentVar($event->getPrefixSpecial() . '_PerPage.' . $view_name, $per_page);
+					$this->setListSetting($event, 'PerPage', $per_page);
 				}
 				else {
 					// per-page not found in request -> get from pesistent session (or session)
-					$storage_prefix = $event->getEventParam('same_special') ? $event->Prefix : $event->getPrefixSpecial();
-					$per_page = $this->Application->RecallPersistentVar($storage_prefix . '_PerPage.' . $view_name, ALLOW_DEFAULT_SETTINGS);
-
-					if (!$per_page) {
-						// per-page is stored to current session
-						$per_page = $this->Application->RecallVar($storage_prefix . '_PerPage');
-					}
+					$per_page = $this->getListSetting($event, 'PerPage');
 				}
 			}
 
@@ -983,11 +976,10 @@
 				}
 			}
 			else {
-				$storage_prefix = $event->getEventParam('same_special') ? $event->Prefix : $event->Prefix_Special;
-				$cur_sort1 = $this->Application->RecallVar($storage_prefix . '_Sort1');
-				$cur_sort1_dir = $this->Application->RecallVar($storage_prefix . '_Sort1_Dir');
-				$cur_sort2 = $this->Application->RecallVar($storage_prefix . '_Sort2');
-				$cur_sort2_dir = $this->Application->RecallVar($storage_prefix . '_Sort2_Dir');
+				$cur_sort1 = $this->getListSetting($event, 'Sort1');
+				$cur_sort1_dir = $this->getListSetting($event, 'Sort1_Dir');
+				$cur_sort2 = $this->getListSetting($event, 'Sort2');
+				$cur_sort2_dir = $this->getListSetting($event, 'Sort2_Dir');
 			}
 
 			$tag_sort_by = $event->getEventParam('sort_by');
@@ -1055,6 +1047,43 @@
 		}
 
 		/**
+		 * Gets list setting by name (persistent or real session)
+		 *
+		 * @param kEvent $event
+		 * @param string $variable_name
+		 * @return string
+		 */
+		function getListSetting(&$event, $variable_name)
+		{
+			$view_name = $this->Application->RecallVar($event->getPrefixSpecial() . '_current_view');
+			$storage_prefix = $event->getEventParam('same_special') ? $event->Prefix : $event->getPrefixSpecial();
+
+			// get sorting from pesistent session
+			$variable_value = $this->Application->RecallPersistentVar($storage_prefix . '_' . $variable_name . '.' . $view_name, ALLOW_DEFAULT_SETTINGS);
+
+			/*if (!$variable_value) {
+				// get sorting from session
+				$variable_value = $this->Application->RecallVar($storage_prefix . '_' . $variable_name);
+			}*/
+
+			return $variable_value;
+		}
+
+		/**
+		 * Sets list setting by name (persistent and real session)
+		 *
+		 * @param kEvent $event
+		 * @param string $variable_name
+		 * @param string $variable_value
+		 */
+		function setListSetting(&$event, $variable_name, $variable_value)
+		{
+			$view_name = $this->Application->RecallVar($event->getPrefixSpecial() . '_current_view');
+//			$this->Application->StoreVar($event->getPrefixSpecial() . '_' . $variable_name, $variable_value, true); //true for optional
+			$this->Application->StorePersistentVar($event->getPrefixSpecial() . '_' . $variable_name . '.' . $view_name, $variable_value, true); //true for optional
+		}
+
+		/**
 		 * Add filters found in session
 		 *
 		 * @param kEvent $event
@@ -1130,17 +1159,17 @@
 		 */
 		function OnSetSorting(&$event)
 		{
-			$cur_sort1		=	$this->Application->RecallVar($event->Prefix_Special.'_Sort1');
-			$cur_sort1_dir	=	$this->Application->RecallVar($event->Prefix_Special.'_Sort1_Dir');
+			$cur_sort1		=	$this->getListSetting($event, 'Sort1');
+			$cur_sort1_dir	=	$this->getListSetting($event, 'Sort1_Dir');
 
 			$use_double_sorting = $this->Application->ConfigValue('UseDoubleSorting');
 
 			if ($use_double_sorting) {
-				$cur_sort2		=	$this->Application->RecallVar($event->Prefix_Special.'_Sort2');
-				$cur_sort2_dir	=	$this->Application->RecallVar($event->Prefix_Special.'_Sort2_Dir');
+				$cur_sort2		=	$this->getListSetting($event, 'Sort2');
+				$cur_sort2_dir	=	$this->getListSetting($event, 'Sort2_Dir');
 			}
 
-			$passed_sort1 = $this->Application->GetVar($event->getPrefixSpecial(true).'_Sort1');
+			$passed_sort1 = $this->Application->GetVar($event->getPrefixSpecial(true) . '_Sort1');
 			if ($cur_sort1 == $passed_sort1) {
 				$cur_sort1_dir = $cur_sort1_dir == 'asc' ? 'desc' : 'asc';
 			}
@@ -1153,12 +1182,12 @@
 				$cur_sort1_dir = 'asc';
 			}
 
-			$this->Application->StoreVar($event->Prefix_Special.'_Sort1', $cur_sort1);
-			$this->Application->StoreVar($event->Prefix_Special.'_Sort1_Dir', $cur_sort1_dir);
+			$this->setListSetting($event, 'Sort1', $cur_sort1);
+			$this->setListSetting($event, 'Sort1_Dir', $cur_sort1_dir);
 
 			if ($use_double_sorting) {
-				$this->Application->StoreVar($event->Prefix_Special.'_Sort2', $cur_sort2);
-				$this->Application->StoreVar($event->Prefix_Special.'_Sort2_Dir', $cur_sort2_dir);
+				$this->setListSetting($event, 'Sort2', $cur_sort2);
+				$this->setListSetting($event, 'Sort2_Dir', $cur_sort2_dir);
 			}
 		}
 
@@ -1177,8 +1206,8 @@
 				list ($field, $dir) = explode('|', $combined);
 
 				if ($this->Application->isAdmin || !$this->Application->GetVar('main_list')) {
-					$this->Application->StoreVar($prefix_special . '_Sort1', $field);
-					$this->Application->StoreVar($prefix_special . '_Sort1_Dir', $dir);
+					$this->setListSetting($event, 'Sort1', $field);
+					$this->setListSetting($event, 'Sort1_Dir', $dir);
 				}
 				else {
 					$event->setPseudoClass('_List');
Index: kernel/session/session.php
===================================================================
--- kernel/session/session.php	(revision 13756)
+++ kernel/session/session.php	(working copy)
@@ -371,13 +371,14 @@
 	 * @param Session $session
 	 * @param string $var_name
 	 * @param mixed $var_value
+	 * @param bool $optional
 	 */
-	function StorePersistentVar(&$session, $var_name, $var_value)
+	function StorePersistentVar(&$session, $var_name, $var_value, $optional = false)
 	{
 		$user_id = $session->RecallVar('user_id');
 		if ($user_id == USER_GUEST || $user_id === false) {
 			// -2 (when not logged in), false (when after u:OnLogout event)
-			$session->StoreVar($var_name, $var_value);
+			$session->StoreVar($var_name, $var_value, $optional);
 			return ;
 		}
 
@@ -1297,9 +1298,9 @@
 		}
 	}
 
-	function StorePersistentVar($name, $value)
+	function StorePersistentVar($name, $value, $optional = false)
 	{
-		$this->Storage->StorePersistentVar($this, $name, $value);
+		$this->Storage->StorePersistentVar($this, $name, $value, $optional);
 	}
 
 	function LoadPersistentVars()