A Turkish court has again blocked access to the popular video-sharing Web site YouTube, and reports Sunday suggested the ban was a response to clips that allegedly insult Mustafa Kemal Ataturk, the country's founding father. Users trying to access the site from Turkey were met with notices in English and Turkish saying access to the Web site was banned under an Ankara court's order. The notices said the court order was issued Jan. 17. In March, another court blocked access to YouTube, which is owned by California-based Google Inc., for two days after a complaint that some clips insulted Ataturk, a war hero who founded Turkey from the ruins of the Ottoman Empire. The ban was lifted after YouTube removed the offending videos. It is illegal in Turkey to insult Ataturk, a revered figure whose portrait still hangs in nearly all government offices almost 70 years since his death in 1938.