I am using flashbuilder 4.6 with the default air SDK. I believe (3.1). I am trying to export a release build of my Iphone app. I entered all the credentials and pressed go. Now flashbuilder has just turned my mouse into a spinning cursor, and seems to be doing nothing. Packaging is at 0% 10 minutes later.
Ah... this could be normal...
It takes one hell of a long time to recompile into iOS format for release, on a Mac I was forced to use a little while ago, that translated into nearly half-an-hour before the indicator moved past 0%.
Try leaving it overnight to see if it completes, if it does, you just need to... ah... buy a faster machine. :$ (Since upgrading to my stupidly expensive laptop, compile is down to around 7-8 minutes.)