SEOs refer to it as 'the sandbox' - it's the phenomenon that new sites go through in getting indexed properly on Google. Although these recommnedations may not speed the process along by much, they help when the spider comes..

1) Publish Some Pages - Any Pages - The whole theory of waiting for the site to be 'perfecto' needs to be tweaked. Publish some pages that - betas if you will - so something is online. You can continue to tweak/polish.

2) Link To The New Site from Existing Google Site - There are theories that the aging delay is to combat 'pop sites' that utilize link networks. Borrowing slightly from this concept, link to the new site from an existing one already indexed in Google. Preferrably a site in the same keyword sphere.

3) Don't try those aged-content tricks - There's a school of thought that combines an aged domain content, a subdomain and a redirect to fool the spider and jimmy the rankings. The jury's is out on this - stick with the basics.

Overall, there is ongoing debate in the SEO community if the delay even actually exists, or is just a phenomenon of sort algorithmic coincidence. People make points for and against. What is known, however, is that Google constantly is changing their algorithm. Some of the updates include some major changes. I believe there were three of these this year, the last one dubbed 'Jagger' happened in early October.