Index: typo3/sysext/setup/mod/locallang.xml
===================================================================
--- typo3/sysext/setup/mod/locallang.xml	(revision 7181)
+++ typo3/sysext/setup/mod/locallang.xml	(working copy)
@@ -107,6 +107,9 @@
 			<label index="enableInstallTool.label">Install Tool Access</label>
 			<label index="enableInstallTool.createFile">Create Install Tool Enable File</label>
 			<label index="enableInstallTool.deleteFile">Delete Install Tool Enable File</label>
+			<label index="tempDataCleared">Temporary data cleared</label>
+			<label index="tempDataClearedFlashMessage">The temporary data has been cleared.</label>
+			<label index="tempDataClearedLog">Temporary data cleared</label>
 		</languageKey>
 	</data>
 </T3locallang>
Index: typo3/sysext/setup/mod/index.php
===================================================================
--- typo3/sysext/setup/mod/index.php	(revision 7181)
+++ typo3/sysext/setup/mod/index.php	(working copy)
@@ -115,6 +115,7 @@
 	protected $passwordIsUpdated = FALSE;
 	protected $passwordIsSubmitted = FALSE;
 	protected $setupIsUpdated = FALSE;
+	protected $tempDataIsCleared = FALSE;
 
 
 	/******************************
@@ -159,6 +160,7 @@
 						unset ($BE_USER->uc[$key]);
 					}
 				}
+				$this->tempDataIsCleared = TRUE;
 			} else {
 					// save all submitted values if they are no array (arrays are with table=be_users) and exists in $GLOBALS['TYPO3_USER_SETTINGS'][columns]
 				foreach($columns as $field => $config) {
@@ -185,6 +187,10 @@
 				$BE_USER->writelog(254, 1, 0, 1, 'Personal settings changed', array());
 				$this->setupIsUpdated = TRUE;
 			}
+				// If the temporary data has been cleared, lets make a log note about it
+			if ($this->tempDataIsCleared) {
+				$BE_USER->writelog(254, 1, 0, 1, $GLOBALS['LANG']->getLL('tempDataClearedLog'), array());
+			}
 
 
 				// Personal data for the users be_user-record (email, name, password...)
@@ -334,6 +340,15 @@
 			);
 			$this->content .= $flashMessage->render();
 		}
+			// Show if temporary data was cleared
+		if ($this->tempDataIsCleared) {
+			$flashMessage = t3lib_div::makeInstance(
+				't3lib_FlashMessage',
+				$LANG->getLL('tempDataClearedFlashMessage'),
+				$LANG->getLL('tempDataCleared')
+			);
+			$this->content .= $flashMessage->render();
+		}
 			// If password is updated, output whether it failed or was OK.
 		if ($this->passwordIsSubmitted) {
 			if ($this->passwordIsUpdated) {