I hope they've settled down by now. BigDaddy has sent my keywords bouncing in and out of the top 10 at a time when being on top these past couple of weeks has been the most important to my site. When a particular event occurs and you're not being listed on that front page, it can be very frustrating. SEO can be difficult enough without adding in the frustration of this day to day bounce.
In my case, the effect was not to lose ranking positions - Big Daddy had very little impact on that for my sites or sites I am associated with. However, ALL of my sites dropped drastically in terms of number of indexed pages and they still haven't recovered yet. That makes me wonder what's ahead - and not in a happy way.