On 08.02.2012 the pagerank of the official site has been updated. With spam filtering effect after the two algorithms is the panda, penguin, the quality of the site is updated pretty well.
Virtually everyone has a site's pagerank increase, depending on the site could be increased more or less increase. The position virtually keywords in seo keywords people still stood. But this is still a good signal for webmaster world.
Your Site has been updated yet. if you are the administrator or the administrator please check light. hopefully you will see good change.