I just purchase a Samsung Tantus 46" model DLP. After a couple of days of viewing I noticed a blacked out pixel on the screen. The manual indicates there can be irregular pixels and quality control allows for these. That is a nice statement considering I just paid $3k+ for a TV! Has anyone else encountered this problem and did it go away? Samsung support said to watch it for a week or two and see if it goes away. If not exchange it for a new unit. Thanks for any info.