my i-130 for f2a was approved 4 weeks ago.. but NVC has not informed me yet. yesterday i called NVC they said my case has not been received yet and asked me to wait 8 weeks. my question is what is the normal time for NVC to receive case? Is any one in this forum who have received their case from NVC which has approved after 21st August? when amazon will start tracking for NVC processing?

Hey, sorry for the delay. The NVC tracker will be out by Sept 24. We are finalizing few things. In the meanwhile, please see this blog post for NVC steps: http://blog.mygcvisa.com/2013/09/nvc-consular-processing-steps.html