Agreed...it's usually a PageRank (PR) of 4 that's required to actually be listed (I don't see too many 3s anymore). And that's on the page that is linking to you, not the website's home page. So, in reality it may be some time before many of your links show up.

Don't let this discourage you from getting links from low PR pages. Everyone is building up their PR and if there are other benefits to linking with that site (ex. reaches your target market, etc.), then it's still a good idea.

So...in short, you won't likely ever see all your incoming links on Google. If you want to see a better indication of who is linking to you, go to http://www.alltheweb.com and check there. You'll probably see a lot of the links you aren't seeing on Google.

Good luck!

Alice