Priority date vs. Receipt Date, USC Applicaiton for Spouse visa

[Shazizub]

Hi, I received my my receipt for I-130 on December 31st, 2007 but it has a receipt date of September 13th 2007, which is when they received my applicaiton. There is no priority date, its blank? Does this mean I go by the receipt date when I look for update on processing times. For example my applicaiton is at California Service Center and their priority date is July 15th 2007. Do I assume that my application is 3 months behind or 6 months? Very confusing.

Also, how long before my paperwork will move forward? I applied for K3 visa as well any idea which one will move forward first. My I-129F was received on January 14th 2008. Please advise..

Thanks,
Shazi