Index: trunk/core/kernel/application.php
===================================================================
diff -u -r3310 -r3316
--- trunk/core/kernel/application.php	(.../application.php)	(revision 3310)
+++ trunk/core/kernel/application.php	(.../application.php)	(revision 3316)
@@ -911,9 +911,10 @@
 		}
 
 		$params_str = '';
+		$join_string = $encode ? '&' : '&';
 		foreach ($params as $param => $value)
 		{
-			$params_str .= '&'.$param.'='.$value;
+			$params_str .= $join_string.$param.'='.$value;
 		}
 		$ret .= preg_replace('/^&(.*)/', '?\\1', $params_str);
 
@@ -1005,9 +1006,10 @@
 			unset($params['escape']);
 		}
 
+		$join_string = $encode ? '&' : '&';
 		foreach ($params as $param => $value)
 		{
-			$ret .= '&'.$param.'='.$value;
+			$ret .= $join_string.$param.'='.$value;
 		}
 
 		if ($encode) $ret = str_replace('\\', '%5C', $ret);