Ubuntu 10.04 – Firefox Default search engine switched to Google

Some months ago canonical decided to change the default search engine in mozilla firefox from Google(In the ubuntu 9.10 version) to yahoo(For the next version i.e Lucid Lynx).So
in the beginning of ubuntu 10.04 Lucid Lynx beta release the default search engine in the mozilla firefox was switched to yahoo from Google.After some week it was decided that the default search engine will be google,and the changes will be made before 15th april.Hence in the final stable release(April 29,2010) Google will be the default search engine for mozilla firefox.I am trying ubuntu 10.04 beta version on my personal computer.When I updated my system on April 14,2010 My default search engine in the Mozilla firefox has changed to Google.