Front controller reached 100 router match iterations

#0 /home/pb/web/petbesinleri.com.tr/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(179): Mage::throwException('Front controlle...')
#1 /home/pb/web/petbesinleri.com.tr/public_html/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#2 /home/pb/web/petbesinleri.com.tr/public_html/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#3 /home/pb/web/petbesinleri.com.tr/public_html/index.php(101): Mage::run('', 'store')
#4 {main}