Emma Watson Causing Problems On Harry Potter Set?

The next Harry Potter movie is due out soon and the sequels, Harry Potter and the Deathly Hallows, Part 1 and Part 2, are being shot right now. Surprisingly it appears things aren't all rosy on the set! According to sources on the set, Emma Watson - who plays Hermione - has been "testy" and "more of a pain than usual" lately.

Daniel Radcliffe, Rupert Grint and the rest of the cast “are a dream to work with,” said the source Wednesday, “But Emma is even more moody than usual. … She’s always complaining, showing up late and has upset both cast and crew members with her rudeness. … She’s really become a big diva. … Everyone’s sick of it.”

Uh oh! Maybe the stress is getting to her?