四月9号寄到的OPT申请材料，现在还没消息。。。

我也是4.18 received...现在还没动静，七月初要开始工作了，心塞...

Might be helpful for you all   April 13: Case was received  June 13 : " Correspondence was received and USCIS is reviewing it"  I had sent my offer letter  June 16 : Case was approved. We will mail approval notice   Card not in hand yet . Finger crossed

再报一个：Just got my case approved:   04/11: Application received directly by Potomac center  06/16: called USCIS after 66 days to inquire about my case. Spoke to an officer who told me the typical processing time was between 75 and 90 days, and all I had to do was to wait.  06/17: status update, my card is now being produced   I don't know if the phone call helped but, if you are desperate like I was, it is worth giving a try even before 75 days. They'll obviously tell you that you still within processing times, but it might put your case on top.