Patch to unset properties on state change

gistfile1.diff

Index: abstract.php
--- abstract.php Base (BASE)
+++ abstract.php Locally Modified (Based On LOCAL)
@@ -107,16 +107,41 @@
      */
     public function set( $property, $value = null )
     {
+        $changed = false;
+
     	if(is_object($property)) {
     		$property = (array) KConfig::toData($property);
     	}
 
-    	if(is_array($property)) {
+    	if(is_array($property))
+        {
+            foreach($property as $key => $value)
+            {
+                if(isset($this->_state->$key) && $this->_state->$key != $value)
+                {
+                    $changed = true;
+                    break;
+                }
+            }
+
         	$this->_state->setData($property);
-        } else {
+        }
+        else
+        {
+            if(isset($this->_state->$property) && $this->_state->$property != $value) {
+                $changed = true;
+            }
+
         	$this->_state->$property = $value;
         }
 
+        if($changed)
+        {
+            unset($this->_list);
+            unset($this->_item);
+            unset($this->_total);
+        }
+
\ No newline at end of file
         return $this;
     }