Not so much that they were rendered poorly, but this movie is the one that finally put me off of the action/effects blockbuster genre.
Basically, any move that show signs that it will feature beasties extremely unrealistically leaping from wall to ceiling to whatever to other wall as they approach the camera gets an automatic thumbs down. It's a tired cliche of such effects-laden movies (that and the obligatory massive swarm of whatevers shot), and a sign that there won't be much else orginal in the movie.
Now that I think of it, I haven't even been to the movies since I saw that one.