More than 500 Attack of the Clones pictures have been ripped out of bus stops and poster frames.
This is more than half of the outdoor posters which film-makers 20th Century Fox have put up around the country, the Sydney Morning Herald newspaper reported.
The posters come in a series of four - each featuring one of the main characters - and Fox bosses think the die-hard fans are trying to steal the whole set.
Bend iron frames
Some people are having to smash the glass and even bend iron poster frames to get at the loot.
20th Century Fox are now re-printing some posters, but there are fears this lot will be stolen too.