Photos taken in October appear to show Mars has had water flowing on it's surface since we first started imaging the planet.
(edited to replace changed link)
http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=420833&in_page_id=1770
(edited to replace changed link)
http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=420833&in_page_id=1770