--- typo3_src-4.6.12-orig/t3lib/class.t3lib_div.php	2012-08-15 12:38:05.000000000 +0200
+++ typo3_src-4.6.12/t3lib/class.t3lib_div.php	2012-10-07 07:08:29.214486605 +0200
@@ -5811,8 +5811,8 @@
 	public static function flushOutputBuffers() {
 		$obContent = '';
 
-		while ($obContent .= ob_get_clean()) {
-			;
+		while ($content = ob_get_clean()) {
+			$obContent .= $content;
 		}
 
 			// if previously a "Content-Encoding: whatever" has been set, we have to unset it