Finding these comments a bit annoying lately. Pretty much any major movie is considered "meh" by some people these days. Star Trek, Avatar... now Iron Man 2. Is there any reason to post a comment at all if you don't like what you've seen?
Yeah, it's a little thing called equal representation. If people only said when they liked something, everything would get perfect reviews.
People are just as entitled to their opinion as you are.
I was actually quite surprised when I saw Iron Man. Given the other comic book adaptations, I assumed it would be quite crap, but Robert Downey Jr was AWESOME! I actually quite like that movie simply for him. Which is also half the reason I like Sherlock Holmes when I saw it, though that was also a fantastic story.