Jan 28, 2008. /Lesprom Network/. Standard & Poor's Rating Services has revised its long-term credit rating on Norske Skog to BB, from earlier BB+. The Negative Outlook is maintained, informed Norske Skog. According to Standard & Poor's press release, the rating action reflects challenging market conditions, and that Norske Skog is underperforming to S & P's financial requirements for the previous rating level. Norske Skog does not have interest or covenants linked to the rating level on the existing debt. Norske Skog is a world leading producer of newsprint and magazine paper, with 18 paper mills around the world.