This excerpt taken from the ELN 20-F filed Mar 30, 2006.
Other significant net charges
The principal items classified as other significant net charges/(gains) include asset impairments, purchase of royalty rights, severance, relocation and exit costs, and costs incurred from litigation or regulatory actions, including shareholder class action litigation and the SEC investigation. These items have been treated consistently from period to period. Our management believes that disclosure of other charges is meaningful because it provides additional information in relation to these material, infrequent and often non-recurring items.