[eluser]kbroich[/eluser]
Thanks for helping out ... I found out that actually the redirect and cookie retreiving works as long as you don't redirect to the same controller you came from.
So when you redirect to a subroutine like redirect('controllername/dosomething); and there then try to check the cookies everyhting is working in IE as well. But when you redirect to the index-function of the controller like redirect('controllername'); IE is not on your side...
Makes sense?
