I haven't gotten approved yet, though I'm from Boston. From the looks of how the approvals are going in Vermont, I'm thinking ill probably hear from them sometime Tuesday or Wednesday of next week. My guess anyway :P not really helpful for you since u are Nebraska. Hmm. Good luck though!
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Application Status: Self-filed on 8/18/12 to Chicago w/ Priority Mail and Delivered on 8/20/12 @ 2:47pm
Date of G-1145 Notification Received (email & text): 08/27/12 @ 3:48pm Routed to Vermont
Date of I-797C Notice of Action Letter Received: 08/31/12
Date of Biometrics: Received 08/31/12 and Scheduled for 09/17/12 in Cranston, RI.
Date of Approval: 10/23/12