At what point should you start seeing your backlinks?

I was wondering at what point would you start to see your backlinks on Alexa or Backlink Checker?

I am thinking that it may be several months before you start to see the backlinks you've created. I also read that pinging your backlinks will help Google to find those backlinks much quicker and I have done this as well, but I still think it may still take a few months for those to show up.

I have been gradually building backlinks to my sites, using social bookmarking, forum posts, and profiles links, but have yet to see any of them besides this forum listed when I check with Backlink Checker. And the Opensite Explorer software doesn't even show this forum at all for a backlink. It still has it as none.

So far, none of my sites are even in the top 100 pages of Google when I checked on each sites' page rank. Granted, my oldest site is only a little over a month old, but shouldn't I be seeing better results than this by now?

Also, at what point should I be able to see the backlinks I've created? I know some of them may get deleted from forums, but when should I start seeing the others?