First of all, I'm a Madonna stand. I don't think gaga took stage 1.5 hours late, I'm only following the little monsters logic. Here's a pic of the ticket:
Gaga took the stage at 9:00 pm, ticket says 7:30 pm, but there is something called OPENING ACT. The same as Madonna, but nobody says gaga treated fans bad for being late.
PLEASE, we don't need a new thread after each Madonna concert.