To assess if Symbicort forte Turbuhaler (during two weeks) is as effective as an oral course of prednisolone + Oxis Turbuhaler (during two weeks) for the treatment of an acute exacerbation of Chronic Obstructive Pulmonary Disease (COPD).

Inclusion Criteria:

• Patients with chronic obstructive pulmonary disease and an acute exacerbation
• After the acute treatment a simple pulmonary function test shows a value of 30%-60% of the predicted normal value.
• Patients, who, based on the clinical examination after the initial acute treatment, are candidates for a course of oral steroids for the treatment of acute symptoms due to chronic obstructive pulmonary disease

Exclusion Criteria:

• Diagnosis/history of asthma
• Oxygen uptake (saturation) is <92% after the initial acute treatment
• A requirement for regular use of oxygen therapy
• Regular treatment with any inhaled steroid >1 000 µg/day at study entry

Additional inclusion and exclusion criteria will be evaluated by the investigator