*spoilers ahead*
i thought overall the film was very good but one thing that keeps bugging me is the plot twist for lisa's character (rachael leigh cook) - what's her motive to help nurv? i thought that milo (ryan philippe) talking to rachel about her past (stepfather molesting her) and other things would definitely put her on his side, but then in the end she just left the room with all the bad guys...
I think its just a plot hole.
I felt the scripting was a bit flawed e.g. spying on coders in their homes and then killing them, that to me is lazy writing, so based on that this situation where Lisa helps him finish the graphics for the clip he plays to the world, whilst also being loyal to NURV is just an over sight they hope the average viewer doesnt catch on to.
I also dont think any information was planted on the files, I think the script writers werent thinking in that kind of complexity, instead its just to show the viewers why the main character would trust her to help him, the writers had to provide something to explain that behaviour. Likewise his girlfriend, that information wasnt planted, instead it was just to add extra to the plot, so he now distrusts his girlfriend, its more drama to add to the movie, and to explain why she ended up helping him in the end is she simply ended up liking him.