Index: t3lib/utility/class.t3lib_utility_phpoptions.php
===================================================================
--- t3lib/utility/class.t3lib_utility_phpoptions.php	(Revision 10080)
+++ t3lib/utility/class.t3lib_utility_phpoptions.php	(Arbeitskopie)
@@ -41,7 +41,12 @@
 	 * @return boolean TRUE if safe_mode is enabled, FALSE if disabled
 	 */
 	public static function isSafeModeEnabled() {
-		return self::getIniValueBoolean('safe_mode');
+		$enabled = self::getIniValueBoolean('safe_mode');
+		if ($enabled) {
+			t3lib_div::deprecationLog('Your server has PHP safe_mode enabled. This option causes several troubles and is already deprecated by the PHP developers (see http://de.php.net/manual/en/ini.sect.safe-mode.php#ini.safe-mode).' . LF .
+				'Running TYPO3 with safe_mode enabled is also deprecated since version 4.5 and already breaks some features. Any support will dropped with version 4.6');
+		}
+		return $enabled;
 	}
 
 	/**