I asked about them when I saw Freddy vs. Jason.
Basically, New Line is inserting red dots in specific formations in certain frames of their movies.
The various formations are specific to theatres and are supposed to help New Line identify which theatres (or more likely which projectionists) are running bootleg operations on the sly.
The problem is, the dots occur several times during the film, and are dead centre in the screen. I’ve heard people who didn’t even notice them, but others (like me) thought they got in the way. I spent a few good minutes wondering “what the heall was that?”, and the second time I saw it I knew what they were and found myself waiting for them to come up, and being distracted from the film.
There has got to be a better way to copy-protect films than to ruin the picture. Hell, they may as well stamp “PROPERTY OF NEW LINE CINEMA: DO NOT COPY” across the bottom of the screen every few minutes. It just bothers me that we have ot sit through a marked print like it was some freebie instead of something we paid for!