Index: typo3/sysext/cms/layout/db_layout.php
===================================================================
--- typo3/sysext/cms/layout/db_layout.php	(revision 6355)
+++ typo3/sysext/cms/layout/db_layout.php	(working copy)
@@ -521,7 +521,19 @@
 			} else {
 				$body = $this->renderListContent();	// All other listings
 			}
-
+			
+			
+			if ($this->pageinfo['content_from_pid']) {
+				$linkToPid = $this->local_linkThisScript(array('id' => $this->pageinfo['content_from_pid']));
+				$flashMessage = t3lib_div::makeInstance(
+					't3lib_FlashMessage',
+					sprintf($GLOBALS['LANG']->getLL('content_from_pid_description'), '<a href="' . $linkToPid . '">', '</a>'),
+					sprintf($GLOBALS['LANG']->getLL('content_from_pid_title'), $this->pageinfo['content_from_pid']),
+					t3lib_FlashMessage::INFO
+				);
+				$body = $flashMessage->render() . $body;
+			}
+			
 				// Setting up the buttons and markers for docheader
 			$docHeaderButtons = $this->getButtons($this->MOD_SETTINGS['function']==0 ? 'quickEdit' : '');
 			$markers = array(
Index: typo3/sysext/cms/layout/locallang.xml
===================================================================
--- typo3/sysext/cms/layout/locallang.xml	(revision 6355)
+++ typo3/sysext/cms/layout/locallang.xml	(working copy)
@@ -81,6 +81,8 @@
 			<label index="pI_hitsPeriod">Hits Period</label>
 			<label index="pI_hits24hours">Last 24 hours</label>
 			<label index="pI_hits10days">Last 10 days</label>
+			<label index="content_from_pid_title">Page uses content from PID %s</label>
+			<label index="content_from_pid_description">This page acts as a mount point and its content is being replaced by another %spage%s. Therefore you cannot edit the content of this page directly.</label>
 		</languageKey>
 	</data>
 </T3locallang>
\ No newline at end of file