Hi goankar, I had very similar experience like aghlen, I went to federal plaza in December, 04. went to third floor, they directed me to 8th floor along with Green form, after waiting for approx 1.5 hrs my number was called and Immigration information officer at counter told to go home and wait for the mail, and that she cannot tell me how long it may take.
she also told me that although my case was transferred in April,04 from VSC they received it in August,04. she was looking at "Last Action Taken" date.
I have taken appointment for May 10th, will update you with new experience.