--- ../TYPO3v4-Core.orig/t3lib/class.t3lib_lock.php	2012-09-03 13:53:23.000000000 +0200
+++ t3lib/class.t3lib_lock.php	2012-09-03 13:59:16.000000000 +0200
@@ -178,7 +178,7 @@
 				}
 			break;
 			case 'semaphore':
-				if (sem_acquire($this->resource)) {
+				if (@sem_acquire($this->resource)) {
 						// Unfortunately it seems not possible to find out if the request was blocked, so we return FALSE in any case to make sure the operation is tried again.
 					$noWait = FALSE;
 				}