Media Advisory: Micromuse and LightReading to Hold Webinar Entitled 'MPLS Management in Large Scale Networks'

The 'MPLS Management in Large Scale Networks,' Webinar willfeature an exclusive presentation from Patrick Kelly, Partner andco-founder of leading telecom software market research firm, OSSObserver. Mr. Kelly will join Micromuse participants, Dr. MatthewEllis, Vice President Engineering, and Scott Sobers, SolutionsDirector, to examine the market drivers, operational challenges, andkey management domains to consider when planning the delivery ofMPLS-based services. Dr. Ellis will also present and review a MPLScustomer case study. To register for this Webinar, please go tohttp://www.lightreading.com/webinar.asp?doc_id=27762

About Micromuse

Micromuse Inc. (Nasdaq: MUSE) is the leading provider ofultra-scalable, realtime business and service assurance softwaresolutions. The Netcool(R) software suite provides organizations withthe assurance that their IT systems are supporting and driving profits24 hours a day. Unlike traditional infrastructure management systems,Netcool solutions provide realtime end-to-end visibility and accuratetroubleshooting from a business perspective. Such businessintelligence allows organizations to respond to problems quickly,streamline workflow processes and improve business uptime. Micromusecustomers include BT, Cable & Wireless, Deutsche Telekom, EarthLink,ITC DeltaCom, JPMorgan Chase, MCI, T-Mobile, and Verizon. Headquartersare located at 650 Townsend Street, San Francisco, Calif. 94103; (415)568-9800. The Web site is at www.micromuse.com.

Micromuse and Netcool are registered trademarks of Micromuse Ltd.All other trademarks and registered trademarks in this document arethe properties of their respective owners. Any statements contained inthis press release that do not describe historical facts mayconstitute forward-looking statements as that term is defined in thePrivate Securities Litigation Reform Act of 1995. Any forward-lookingstatements contained herein are based on current expectations, but aresubject to a number of risks and uncertainties.

The factors that could cause actual future results to differmaterially from the forward-looking statements include the following:fluctuations in customer demand, the Company's ability to manage itsgrowth (including the ability to hire sufficient sales and technicalpersonnel), the risks associated with the expansion of the Company'sdistribution channels, the risk of new product introductions andcustomer acceptance of new products; the rapid technological changewhich characterizes the Company's markets, the risks associated withcompetition, the risks associated with international sales as theCompany expands its markets, and the ability of the Company to competesuccessfully in the future, as well as other risks identified in theCompany's Securities and Exchange Commission Filings, including butnot limited to those appearing under the caption "Risk Factors" in theCompany's most recent Quarterly Reports on Form 10-Q and on Form 10-Kon file with the Securities and Exchange Commission and available onthe Company's Web site.