here is useful link for the visa processing times for different consular posts around the world. this is a DOS website so it is fairly reliable. but remember not everyone will be processed in the same time frame they have indicated.
http://travel.state.gov/visa/temp/wait/tempvisitors_wait.php
i hope it helps. Cheers
http://travel.state.gov/visa/temp/wait/tempvisitors_wait.php
i hope it helps. Cheers