One Movie, Two Endings!

A damn popup ad just informed me that there is an alternate ending to 28 Days Later, that one can only view currently by sticking around until the credits are done. I did just that and there was no alternate ending. I look into things further, and lo and behold, it is a new addition to the film, no doubt concocted to get people to view the film a second time! Those bastards! I really enjoyed the film (enough that even though I had downloaded it before it was released over here, I waited to see it in the theatres), but I don't think I'll make a point of seeing it again in theatres just for a last minute addition designed to drum up business. Anyone see the alternate ending? Care to let us know how it turned out?