I liked this movie. It was a good sci-fi flick, but based in a believable near-future world. The voyage is captured by stationary cameras throughout the ship and a story is patched together from them. The acting was very good. There admittedly wasn't much in the way of character development, but I didn't notice it. The whole film I was hoping the story would move forward faster and faster to the end, to find out what, if anything, was discovered, and the fate of the crew.
Mostly what I liked about it was that it wasn't over-the-top storytelling, nor was it over-the-top with special effects. It used them only to tell the story that needed to be told and weren't overused. One reviewer chastised the special effects as being poor, but I disagree. They were believable. Bad is the crap they make for the Science Fiction Channel.
This movie may not appeal to everyone precisely because it's not over-the-top. It was simple, with building tension throughout the film and a good ending. There weren't monsters and aliens everywhere, there was a distinct Hitchcocian feel to it.
Very good; well worth watching.