Yesterday when I searched Google for 'Acura RDX', I was the 3rd result. Today, I'm not even on the first 10 pages. What's wrong? http://www.google.com/search?hl=en&q=acura+rdx&btnG=Google+Search
Give it some time, a lot of people have been complaining about the same thing. Generally it will go back within a few days.
Who knows the truth is that we just don’t know what to expect anymore. It seems that things are changing daily….
is your website new? or old... and was it a mirror with some site before this? These might look strange questions to you.. but one of the site I'm working on was a mirror site with another one, and now their rankings always change on Google. sometimes one of them comes on the first page, and the other not even in the first 100 and then the next day, they swap places :s