I came across a huge problem with out of letterbox touch events not responding. i found that the answer was not corona itself but the director class.
to fix the problem i replaced
[lua]local _W = display.contentWidth
local _H = display.contentHeight[/lua]
with
[lua]local _W = (math.ceil(math.abs(display.screenOriginX)) * 2) + display.contentWidth
local _H = (math.ceil(math.abs(display.screenOriginY)) * 2) + display.contentHeight[/lua]
please refer to this post http://developer.anscamobile.com/forum/2012/01/03/outside-letterbox-scale-no-click-event
and please update the director class! thanks! [import]uid: 50514 topic_id: 19925 reply_id: 319925[/import]