I wanted to add the last thing -
When i went to the interview at the embassy, i forgot the I-134 from and the man told me to email it in. Only my fiance misspelled the email address. After this point - check this link for your update.
It was saying 'ready for interview' even after my interview and after a week or so of me sending the I134 in to
[email protected] , it changed to 'Processing' and then to 'Issued' within two days. 24 hours after that, DX emailed me to say they had the passport and i'm just waiting for that to be delivered to my home.
Good luck all xx