I think, I'm the owner of best record of being in NVC biggrin.gif
They always copy and paste below text as my reply when i send email for them.
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Good Afternoon,

All documentation necessary to complete the National Visa Center's processing has been received. As soon as an interview date has been scheduled, the designated representative of this case (applicant, petitioner, or attorney) will be notified. The US Embassy or Consulate General may require additional documentation at the time of the interview.

Regards,
National Visa Center
OH2/ban

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at least it's a ray of hope that they have not lost my case. blush.gif
Best wishes for you
arash