This movie has already wrapped and is in post-production.

According to imdb.pro this movie is still in Development and they mention UK as filming location. But when they will start is still unknown. If this is the movie you were talking about http://imdb.com/title/tt1161767/

The problem is that people will take address from here and post them on their website and on other messageboard as well. And you also don't know when the actor will be on a set, you may have written a week ago, but maybe the actor or actress wasn't on set this week. I can't remember what theatre pla...

No I haven't written to any, but what I've read on other websites about this topic is, that they suggest to get a P.O. Box instead of writing your home address on the letter.

You can call the production company usually they have the number listed as well and ask politely if they can give you the production office address.

imdb.pro says Playtone is the production company

They already started filming April 21st 2010 and will wrap at the end of June. And Playtone is only the production company.

They already started filming May 23rd and will film till July 7th. They will film in Melbourne, try contacting Film Victoria

http://www.film.vic.gov.au
contact@film.vic.gov.au

maybe they can help you further.

Yes this movie ist about to finish, propably tomorrow. They started shooting March 15th in New Mexico in mid April they moved the Production to Texas and shot there for 6 weeks.

This movie is wrapping at the end of this months.