Index: typo3/sysext/install/updates/class.tx_coreupdates_installnewsysexts.php
===================================================================
--- typo3/sysext/install/updates/class.tx_coreupdates_installnewsysexts.php	(Revision 10313)
+++ typo3/sysext/install/updates/class.tx_coreupdates_installnewsysexts.php	(Arbeitskopie)
@@ -45,7 +45,7 @@
 	 * @return	boolean		whether an update is needed (true) or not (false)
 	 */
 	public function checkForUpdate(&$description) {
-		$result = false;
+		$result = FALSE;
 		$description = '
 			<p>
 				Install the following system extensions that are new in TYPO3
@@ -72,13 +72,16 @@
 					</li>
 				';
 
-				$result = true;
+				$result = TRUE;
 			}
 		}
 
 		$description .= '
 			</ul>
 		';
+		if ($this->isWizardDone()) {
+			$result = FALSE;
+		}
 
 		return $result;
 	}
@@ -134,7 +137,6 @@
 	 * @return	boolean		whether it worked (true) or not (false)
 	 */
 	public function performUpdate(&$dbQueries, &$customMessages) {
-		$result = FALSE;
 
 			// Get extension keys that were submitted by the user to be installed and that are valid for this update wizard
 		if (is_array($this->pObj->INSTALL['update']['installNewSystemExtensions']['sysext'])) {
@@ -143,10 +145,12 @@
 				array_keys($this->pObj->INSTALL['update']['installNewSystemExtensions']['sysext'])
 			);
 			$this->installExtensions($extArray);
-			$result = TRUE;
 		}
 
-		return $result;
+			// Never show this wizard again
+		$this->markWizardAsDone();
+
+		return TRUE;
 	}
 
 
Index: typo3/sysext/install/updates/class.tx_coreupdates_installsysexts.php
===================================================================
--- typo3/sysext/install/updates/class.tx_coreupdates_installsysexts.php	(Revision 10313)
+++ typo3/sysext/install/updates/class.tx_coreupdates_installsysexts.php	(Arbeitskopie)
@@ -45,7 +45,7 @@
 	 * @return	boolean		whether an update is needed (true) or not (false)
 	 */
 	public function checkForUpdate(&$description) {
-		$result = false;
+		$result = FALSE;
 		$description = '
 			<p>
 				Install the following system extensions as their functionality
@@ -107,9 +107,12 @@
 
 		foreach($this->newSystemExtensions as $ext) {
 			if (!t3lib_extMgm::isLoaded($ext)) {
-				$result = true;
+				$result = TRUE;
 			}
 		}
+		if ($this->isWizardDone()) {
+			$result = FALSE;
+		}
 		return $result;
 	}
 
@@ -179,7 +182,6 @@
 	 * @return	boolean		whether it worked (true) or not (false)
 	 */
 	public function performUpdate(&$dbQueries, &$customMessages) {
-		$result = FALSE;
 
 			// Get extension keys that were submitted by the user to be installed and that are valid for this update wizard
 		if (is_array($this->pObj->INSTALL['update']['installSystemExtensions']['sysext'])) {
@@ -188,10 +190,12 @@
 				array_keys($this->pObj->INSTALL['update']['installSystemExtensions']['sysext'])
 			);
 			$this->installExtensions($extArray);
-			$result = TRUE;
 		}
 
-		return $result;
+			// Never show this wizard again
+		$this->markWizardAsDone();
+
+		return TRUE;
 	}
 
 	/**
Index: typo3/sysext/install/Classes/Updates/Base.php
===================================================================
--- typo3/sysext/install/Classes/Updates/Base.php	(Revision 10313)
+++ typo3/sysext/install/Classes/Updates/Base.php	(Arbeitskopie)
@@ -220,5 +220,38 @@
 		}
 	}
 
+	/**
+	 * Marks some wizard as being "seen" so that it not shown again.
+	 *
+	 * Writes the info in localconf.php
+	 *
+	 * @return void
+	 */
+	protected function markWizardAsDone() {
+		// Instance of install tool
+		$install = new t3lib_install;
+		$install->allowUpdateLocalConf = 1;
+		$install->updateIdentity = 'TYPO3 Upgrade Wizard';
+		// Get lines from localconf file
+		$lines = $install->writeToLocalconf_control();
+		$wizardClassName = get_class($this);
+		$install->setValueInLocalconfFile($lines, '$TYPO3_CONF_VARS[\'INSTALL\'][\'wizardDone\'][\'' . $wizardClassName . '\']', 1);
+		$install->writeToLocalconf_control($lines);
+	}
+
+	/**
+	 * Checks if this wizard has been "done" before
+	 *
+	 * @return boolean TRUE if wizard has been done before, FALSE otherwise
+	 */
+	protected function isWizardDone() {
+		$wizardClassName = get_class($this);
+		$done = FALSE;
+		if (isset($GLOBALS['TYPO3_CONF_VARS']['INSTALL']['wizardDone'][$wizardClassName]) &&
+			$GLOBALS['TYPO3_CONF_VARS']['INSTALL']['wizardDone'][$wizardClassName]) {
+			$done = TRUE;
+		}
+		return $done;
+	}
 }
 ?>