"X-Men: First Class" dropped to second place taking in a respectable $25 million this weekend. "Super 8" claimed top spot with $38 million. Still wouldn't call First Class a flop yet.
That's actually a respectable drop of what, around 50% or so which shows the movie is holding its own fairly good if it was seeing a drop into 60% or more that'd be bad news.
Word-wide total puts this movie now a $173 million which means that in two weeks, world wide, the movie has paid for its production budget.