If you go to :
Internet Options ----- then choose "Security" at the top of those choices, you can change the level of obscenities. You have four options which you can personalise.
Mine are all at minimal, not for pornographic reasons, but because sometimes you cannot even access pages that have no obscene things, but maybe show the smallest area of a female.
I have not been re-directed before...so you must have just been unlucky. My idea may for-warn you next tmie tho.
Hope this helps a bit ...
Dan