The manufacturing delays, the issues with the case .. the volcano! (Seriously, the project was delayed by the Iceland volcano in 2010 ..) The issues with the original team splitting up, and so on .. well, it still bloody shipped! And its an excellent device!
And the best part is that all those lessons were learned, and applied, to the new Pyra - which is the spiritual successor to the Pandora in many ways. I was lucky enough to have a Pyra prototype to play with a few months back, and its going to be a very special device for a lot of folks - open, accessible, hackable. A truly delightful Linux workstation! :)