Found in cunsumer reveiws, I think this is the same as you are talking about.
http://www.mazda3forums.com/viewtopic.php?t=2901&sid=bfecfd7fc1c8410087b1a36cf87eab8e
http://www.mazda3forums.com/viewtopic.php?t=2901&sid=bfecfd7fc1c8410087b1a36cf87eab8e