Almost always the answer is “no.”
If you filed your application well before the current posted processing time (May, 2014), then it might make sense to submit an inquiry just to make sure something hasn’t happened or the file hasn’t gotten lost. Otherwise, submitting endless inquiries to the VSC for the 95,000 cases pending there is only going to slow down the process, because a human being has to respond to those inquiries.
If you submit an inquiry and your case is not outside of the current processing times, don’t be surprised if the USCIS doesn’t respond.
If you filed your application well before the current posted processing time (May, 2014), then it might make sense to submit an inquiry just to make sure something hasn’t happened or the file hasn’t gotten lost. Otherwise, submitting endless inquiries to the VSC for the 95,000 cases pending there is only going to slow down the process, because a human being has to respond to those inquiries.
If you submit an inquiry and your case is not outside of the current processing times, don’t be surprised if the USCIS doesn’t respond.