I have built some links from high PR and related sites for my site recently and I still don't see any increase in the search engine position of my site. How long can it take to see results if you build some good new links for your site?
I've been testing this recently with links that I know get indexed in a few days it's taking up to 6 weeks for SERPs boost to stabalise.
The simple answer is: when search engines crawl up your website and see the changes and when they crawl other websites to detect links to yours. You can imagine that it varies quite a lot. Â