Almaty. May 7. Kazakhstan Today - As of March 1, 2008 six leading banks - Kazkommertsbank, BTA Bank, Alliance Bank, National Saving Bank of Kazakhstan, ATF Bank, Bank Central Credit - have recognized credits for a total sum $1178.9 million as a loss, the agency reports referring to Institute of Economic Research - Central Asia. "Common trend of the whole banking system is deterioration of the assets and credits. All banks delay to repay credits," IER - CA analysts consider.