Unfortunately, as my colleague pointed out ... you probably won't hear anything until the middle of 2014.
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This is normal and within the expected processing time.
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I agree with my colleagues, processing times are long ... you might want to make a request for expedited processing, if you meet certain criteria. You would need evidence of extreme medical emergency or for urgent humanitarian reasons. Call the USCIS costumer service number. Petitions are considered on a case-by-case basis.