Index: trunk/kernel/parser.php
===================================================================
diff -u -r1279 -r1280
--- trunk/kernel/parser.php	(.../parser.php)	(revision 1279)
+++ trunk/kernel/parser.php	(.../parser.php)	(revision 1280)
@@ -460,7 +460,7 @@
     else
     {
     	$value = $FormValues[$form][$field];
-    	if( getArrayValue($attribs,'_default') ) $value = $val;
+    	if( !isset($value) && getArrayValue($attribs,'_default') ) $value = $val;
     	if($value==$val) $checked=' CHECKED';
     }