One question for DaBoy, thanks

Thanks a lot for your suggestion about the relo. package.

How long does it take to prepare the H1B application package including LCA? (from accepting the offer to submitting the petition). Somebody said that the company needs to post the job notice on two places for ten days in order to get the LCA approved by DOL. And somebody said that it just needs a few days or even sevral hours to get the LCA. I am confused about this. Can you clarify this? Thanks a lot.