Index: DataTable.php
===================================================================
--- DataTable.php	(revision 1852)
+++ DataTable.php	(working copy)
@@ -147,6 +147,9 @@
 	 */
 	protected $currentId;
 	
+	protected $nextRowId = 0;//new added
+	
+	
 	/**
 	 * Current depth level of this data table
 	 * 0 is the parent data table
@@ -160,7 +163,7 @@
 	 * 
 	 * @var bool
 	 */
-	protected $indexNotUpToDate = true;
+	//protected $indexNotUpToDate = true;
 	
 	/**
 	 * This flag sets the index to be rebuild whenever a new row is added, 
@@ -170,7 +173,7 @@
 	 * 
 	 * @var bool
 	 */
-	protected $rebuildIndexContinuously = false;
+	//protected $rebuildIndexContinuously = false;
 	
 	/**
 	 * Column name of last time the table was sorted
@@ -252,7 +255,7 @@
 	 */
 	public function sort( $functionCallback, $columnSortedBy )
 	{
-		$this->indexNotUpToDate = true;
+		//$this->indexNotUpToDate = true;
 		$this->tableSortedBy = $columnSortedBy;
 		usort( $this->rows, $functionCallback );
 		
@@ -414,12 +417,12 @@
 	 */
 	public function getRowFromLabel( $label )
 	{
-		$this->rebuildIndexContinuously = true;
+    /*	$this->rebuildIndexContinuously = true;
 		if($this->indexNotUpToDate)
 		{
 			$this->rebuildIndex();
 		}
-		
+	*/	
 		if($label === self::LABEL_SUMMARY_ROW
 			&& !is_null($this->summaryRow))
 		{
@@ -437,6 +440,8 @@
 	/**
 	 * Rebuilds the index used to lookup a row by label
 	 */
+	 
+	/*
 	private function rebuildIndex()
 	{
 		foreach($this->rows as $id => $row)
@@ -449,7 +454,7 @@
 		}
 		$this->indexNotUpToDate = false;
 	}
-
+         */
 	/**
 	 * Returns the ith row in the array
 	 *
@@ -496,17 +501,19 @@
 	 */
 	public function addRow( Piwik_DataTable_Row $row )
 	{
-		$this->rows[] = $row;
-		if(!$this->indexNotUpToDate
-			&& $this->rebuildIndexContinuously)
-		{
+		$this->rows[] = $row;		
+		//if(!$this->indexNotUpToDate
+		//	&& $this->rebuildIndexContinuously)
+		//{
 			$label = $row->getColumn('label');
 			if($label !== false)
 			{
-				$this->rowsIndexByLabel[$label] = count($this->rows)-1;
+				//$this->rowsIndexByLabel[$label] = count($this->rows)-1;
+				$this->rowsIndexByLabel[$label] = $this->nextRowId;
+				$this->nextRowId++;
 			}
 			$this->indexNotUpToDate = false;
-		}
+		//}
 	}
 
 	/**
@@ -816,8 +823,8 @@
 		$rows1 = $table1->getRows();
 		$rows2 = $table2->getRows();
 		
-		$table1->rebuildIndex();
-		$table2->rebuildIndex();
+		//$table1->rebuildIndex();
+		//$table2->rebuildIndex();
 		
 		if($table1->getRowsCount() != $table2->getRowsCount())
 		{