At a time when other states are facing major credit issues, Connecticut’s financial situation is stable, according to State Treasurer Denise L. Napier. Last week the state began to sell $250 million in bonds, but, because of demand, increased the offering to $500 million. According to information released by Napier’s office, the bonds were rated AA by Standard & Poor’s and were highly sought by both institutional and individual investors. This is a sharp improvement over last month, when the state cut back on a $480-million bond offering because of the economic crisis.