Beware of Adbrite, they are dead and now a scam. They simply stopped sending me checks for December and for January without any notice or word or anything. I've sent 3 or 4 e-mails over the past week to see what's up and of course there is no response. Another thread was started about this too: https://forums.digitalpoint.com/threads/is-adbrite-dead.2629258/ Get out while you can and switch over all your ads!
Looks like they're going out of business: http://www.technouz.com/829/adbrite-ceases-operations-1st-feb-2013/ Maybe that's why you haven't had any payments.
I don't think they will pay. If they really want to pay, they will announce in the website when the publishers will get the last payment
Unless you go against them in court, you won't get a dime, obvisouly being in the same country is a must and paying high fees for an attorney is another must... is your account worth that much?
It's amazing what these people can get away with. I've got about 9 months of money owed by Adbrite!!! Scott Messick (& crew) of Media Mayhem was my last experience of being ripped off by these sort of criminals... And that's what they are...