Well, it's a big, unwieldy play in three acts. And you have to put the interval somewhere.
Don't confuse them with facts!
Calm down dear, it's not unheard of for people to comment on an unusually short first half/unusually long second half combo when previously-seen productions of the play have done it the other way round or at least acknowledged the three-act structure with a short break between acts 2 and 3.
I saw this last night and thought it was ok, didn't love it though - not sure whether this was more down to directorial choices than the acting/play itself. I was more concerned about the shower and what it was doing to the carpet than the play oddly. It did get a standing ovation from quite a few people though.
The lady next to me had seen numerous versions and declared the nudity unnecessary and Jack O'Connell neither charismatic nor handsome enough to be Brick, although i thought he did really well in the role. Sienna Miller grew on me throughout - she's got an awful lot to do in the first act.
I was out of the theatre by 10.40, but it did start late, so I assume a 10.20/10/30 finish is more likely.
The shower is on stage left, so people sitting on that side of the audience and close to the stage (as I was) would possibly get a better view. However, he takes his clothes off on more than one occasion, so I think everybody gets a chance to see whatever they want.