EXHIBIT 23(a) CONSENT OF DELOITTE & TOUCHE LLP INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in this Registration Statement of Xcelera Inc. on Form S-8 of our report dated July 24, 2002, appearing in the Annual Report on Form 20-F of Xcelera Inc. for the year ended January 31, 2002. DELOITTE & TOUCHE LLP Stamford, Connecticut December 4, 2002