title: Problems with fe_login
body: <p>I have a problem with TYPO3's front end user login extension, It correctly detects correct logins and logouts but if I enter an incorrect user/password combination then It doesn't show any error or warning message (which are defined).</p>
  
  <p>I've tried to trace the extension code and print all states and request values and discovered that once incorrect login attempt is detected it "erases" any session or request variable like  It would be the first time a user enters the page.</p>
  
  <p>I am using TYPO3 4.5.2, if any one has a clue about what's going on it would really helpful.</p>