Too confusing and too many exploding heads

Rating: 3/10 (9 June 2012)

I have heard that there are 30 minutes missing from the theatrical release. If that is the case then they chose to cut out any scene that could have helped this movie hang together better as a film.
The people heading to the planet were not "scientists". The character stereotypes didn't fit at all. It would be more appropriate to call them explorers, or "adventure seekers" or even treasure seeking pirates than to call them "scientists". Just watch the actual Mars rover science teams to get a feel for how that generalized stereotype might behave when faced with exploring a new planet. There was also supposed to be a difference between the "science team" and the "hired help" that was pretty blurry most of the time...why was the hired help there exactly?
I lost track of how many heads exploded and how many different types of infections were going on during the movie. And, I just didn't care who died...it wasn't even clear who the hero was even in the end. I guess the formerly impregnated girlfriend is angry now and wants some answers so she is...going to confront a planet of other angry aliens in an act of...? Revenge? Retribution?
There is so much more that didn't make sense to me, these are just the highlights.