Say it isn't so. Slashdot has a story describing some mixed reviews for the movie. The gist of it is all action, no plot. Even a "favorable" review I read on Ain't It Cool News made a similar reference. I'm hoping that the context provided by the first movie allows for a more action-oriented film while still retaining many of the awe inspiring elements of the original.
I'm going to try to keep an open mind going into the movie. Fortunately, some friends at a well known storage company are having an early screening of the movie in my area so I should be able to see it prior to hearing much commentary from friends and neighbors. As for critics, I'll read Ebert's column after I see the film.
UPDATE: Didn't get to see the movie yet, but I'm hearing some good things already. Looking forward to seeing it on Saturday afternoon.