Many Webmasters and site owners are suffering with the Google Farmer / Panda update in the Google.com, Google U.S., results. But soon, the Farmer/Panda update will be rolling out more widely beyond the U.S. to the U.K. and other countries. http://www.seroundtable.com/google-uk-farmer-panda-13148.html
A lot of people are panicking due to the latest Google changes. It's pretty simple, really. Create your own keyword rich sites, create unique content that is properly optimized for search engines, and ensure that your backlinks are diversified. Follow these steps and you'll survive through most any Google update.
Yes, Google is getting bigger changes in the past few days, my site's ranking fell from the back of what went before, after a few days, and now is back up the rankings.