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I would assume that the URLs in the top post are not the ones it's really about. That's not the type of guys you see asking questions about ODP listings around here.
Yabbi, the domain www.example.com has been specifically set aside by the internet gods for use as - well, as an example. It's garanteed not to lead to any embarrassing places... ;)
Now to your actual question: That depends on how active or busy the resident editor is in the category where your site is listed. It can be anything from a few minutes (it happens!) to several months.