My I-129F case was approved on 3/25/2008, along with the I-130. Both were, according to USCIS, forwarded to NVC.
So far, more than a month later, the NVC has no record, and isn't willing to investigate until 90 days have passed. That seems absolutely insane, as there are clearly mid-April cases which they have processed.
Are there any other approved-in-March cases that haven't been acknowledged by NVC? Is there any way of investigating whether the petitions were really forwarded? USCIS and NVC have both been supremely unhelpful in this regard.