Cargo.
Deep space mission, small crew, somethings up.
Sounds a bit boring, started out looking like it was going to be a low rent and fairly obvious whodunit / they all get knocked off one by one, type thing (Obvious terrorist news report TV clip before the ship takes off suggests said terrorist will play a part later in the film - yawn).
Actually became something more interesting. Then it became something even more interesting. . . then . . . it spunked it, ruined the new idea with some shithouse matrix twaddle, had some poorly executed, and pointless, hero sacrifice before having a the least tense or scary 'last minute scare' ever.
It was almost like they were trying to make a space isolation suspense movie by the book, but accidentally came up with something quite interesting while trying to avoid copyright issues (quickly dumped when we got over that hump).
The 'matrix' simulation should have just been almost brain dead people feeding a computer responses to fool the people back home. Not an actual simulation - maybe a fucked up half dream at best. The simulation (as it stood) was a solution to the populations problems, making the ruse pointless.
Also, at the beginning of the film they mention that they last people leave the dying earth for a cramped hell in space. . . but Earth is OK again? Was nobody monitoring what was going on?
Bah.
A fun enough jaunt I suppose.