My session username gets lost in redirection?

Hm... This is was the problem. I had $config['sess_match_useragent']=TRUE; when I changed it to FALSE my code worked. I didnt change browsers - its Opera by the way - it obviously was regenerating session cookie, so somehow CI failed to see that it was the same browser, or maybe something to do with wamp... Weird cos ideally I would like to check if its the same browser.

Do the one thing you think you cannot do. Fail at it. Try again. Do better the second time. The only people who never tumble are those who never mount the high wire.