[TYPO3] FE-Login with _real_ redirect (HTTP, Location-Header!)?

[Wolfgang Illmeyer]

Hi.
I have got a page for logged in FE-users which should allow refreshing.
However, using the FE-Login provided by typo3, there's 
no "Location"-HTTP-Header sent, and the new page is rendered directly. This 
is very problematic, because all major browsers (Tested: IE, FF) ask for 
confirmation to re-send the POST-formdata before refreshing the page.
How can I make typo3 do _real_ (HTTP) redirects after login?#

Thanks

Wolfgang