diff --ignore-all-space -ru typo3_src_trunk_orig/t3lib/class.t3lib_userauth.php typo3_src_trunk/t3lib/class.t3lib_userauth.php
--- typo3_src_trunk_orig/t3lib/class.t3lib_userauth.php	2010-08-09 12:12:25.000000000 +0400
+++ typo3_src_trunk/t3lib/class.t3lib_userauth.php	2010-08-09 12:26:13.000000000 +0400
@@ -221,8 +221,11 @@
 		$id = $this->getCookie($this->name);
 		$this->svConfig = $TYPO3_CONF_VARS['SVCONF']['auth'];
 
-			// if we have a flash client, take the ID from the GP
-		if (!$id && $GLOBALS['CLIENT']['BROWSER'] == 'flash') {
+			// if we have a flash client, take the ID from the GP even if session cookie is present
+			// it is a workaround for the Flash Cookie Bug:
+			// on Windows the Non-IE Flash Player plugin (FireFox, Opera, Safari, etc)
+			// will send the IE cookies regardless of the browser used
+		if ($GLOBALS['CLIENT']['BROWSER'] == 'flash') {
 			$id = t3lib_div::_GP($this->name);
 		}