Index: trunk/core/kernel/event_handler.php
===================================================================
diff -u -r3872 -r4137
--- trunk/core/kernel/event_handler.php	(.../event_handler.php)	(revision 3872)
+++ trunk/core/kernel/event_handler.php	(.../event_handler.php)	(revision 4137)
@@ -190,8 +190,20 @@
 				$ret .= $processed_params[$prefix_special.'_Page'].'/';
 			}
 			
-			if($processed_params[$prefix_special.'_id'])
-			{
+			if ($processed_params[$prefix_special.'_id']) {
+				
+				// this allows to fill 3 cache records with one query (see this method for details)
+				$category_id = isset($url_params['m_cat_id']) ? $url_params['m_cat_id'] : $this->Application->GetVar('m_cat_id');
+				$category_filename = $this->Application->getFilename('c', $category_id);
+				
+				// if template is also item template of category, then remove template
+				$template = getArrayValue($url_params, 't');
+				$item_template = $this->Application->getCache('item_templates', $category_id);
+				if ($template == $item_template) {
+					unset($url_params['t']);
+				}
+				
+				// get item's filename
 				$filename = $this->Application->getFilename($event->Prefix, $processed_params[$prefix_special.'_id'] );
 				if($filename !== false) $ret .= $filename.'/';
 			}