Exhibit 23 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference of our reports dated May 11, 2001 included in this annual report on Form 10-K, into the Company's previously filed Registration Statement No. 333-75559, No. 33-18793 and No. 333-62581. /s/ Arthur Andersen LLP Boston, Massachusetts June 27 , 2001 1