We had an update about 2-3 days ago.
Last time, I decided to get some "backlinks" for one of my site. I did a directory submission, I exchange a good dozen links with relevants sites. I also put my anchor in a couple of PR8 sites but they change them with a noFollow before it was hit by Google.
Results: PR3 to PR2

I have another site, but I had no time to do the same thing, and to be honest, it's not a major site for me like the first one.
It gets no backlinks on Google
Results: PR2.

So, what's wrong with me?