It seems interesting, though I just downloaded it today. http://www.seobook.com/archives/001741.shtml
Looks like its working for me now that I turned them on auto. Seems pretty accurate also. Actually I am coming back to this post and I absolutely love this thing. I recommend it to all.
It looks pretty good, it automates a lot of the searches I do when I do link building. However it slows the searches a lot, so I am going to have it on only when I am in SEO mode.
Just to be fair: I did some more tests, and it's NOT the SEO plugin that was causing the instability. It was a single page I was trying to access.