No, I mean, 2 hrs 39 mins, more than your average movie, although I've definitely been through a good few that were longer. For me, it was just that

A. I didn't like the story
B. Kubrick used a lot of long, silent shots of strange things like showing Tom Cruise walking through a door and then a hallway like 6 seperate times
C. I really wanted it to end

So it seemed dragged out. There's a conversation near the end between Cruise and Sydney Pollack that goes on for a full 14 minutes, no music or anything, and some of the lamest dialogue I swear I've ever heard.