I've been reading over at AVS and got a couple PMs from some people who have experienced the problem and not only is the light engine replacement covered until the Samsung waranty (as I figured it would be), but they WILL come to my house and do it...no shipping necessary.
And there have been reports of some lens being replaced which also fixed the prism/halo is issue.
It's so weird though...I only
noticed it on the Scorpion King HD DVD...not at all on the NIN HD DVD, not at all while gaming on the 360 and not at all on regular TV viewing.
And even in The Scorpion King, it was barely noticeable. I seemed to have lucked out in that sense, I guess.
Other than that little problem, I absolutely LOVE this set. The PQ is stunning. I never want to be away from it and its nuturing 1080p glow of awesome.