Micromuse Inc. (Nasdaq: MUSE), leading provider of ultra-scalable, realtime business and service assurance software, today announced that Catch Communications (OSE: CATCH) has implemented the Netcool(R) suite for enhanced availability and service-level management of its rapidly expanding DSL broadband infrastructure. Headquartered in Bodo, Norway, Catch Communications is the largest alternative broadband provider on the Oslo Stock Exchange.

"In a time of consolidation in the broadband market Catch is going through a period of advanced growth. Catch needed a scalable service assurance solution that could easily integrate with existing and future management systems, and customer and network inventories to provide enhanced visibility across our broadband infrastructure," said Brian Morsund, Operations Manager of Catch Communications. "The Netcool solution was able to quickly demonstrate a clear advantage over the other products in the market and has enabled us to ensure our customers' Quality of Service during a time of market place consolidation. By relying on the Netcool suite for service assurance, we are confident that we will be able to handle future network and customer growth in the best possible way."

After a proof of concept and competitive analysis of service assurance solutions, Catch Communications selected Micromuse's Netcool suite for its ability to demonstrate a clear business advantage. Catch Communications is using Netcool solutions to collect and consolidate data from various network elements and silo-based information systems to produce a centralized, realtime, web-enabled customer focused view. This helps Catch Communications operations to quickly identify and prioritize service-affecting infrastructure faults before they impact customer service.

Teleca OSS, a Micromuse accredited partner in the Scandinavian region, was responsible for the design, implementation and integration of Catch Communications' service assurance solution.

"In complex infrastructures where service uptime is business-critical, Micromuse is able to demonstrate a clear return on investment in terms of cost savings and operational efficiencies," said Richard Lowe, Micromuse's Senior Vice President for the Europe, Middle East & Africa region. "Our proven Netcool technology is helping to assure service uptime across the world, and we are pleased to welcome Catch Communications to a distinguished list of DSL customers including Telecom Italia, Cable & Wireless, Comcast, Roadrunner, and Fastweb Italy."

About Catch Communications

The Catch group is Norway's leading independent provider of data communication and internet services, with a special focus on the communication requirements of companies, the public sector and professional users. These services are based on its innovative DSL infrastructure. Turnover in 2003 came to NOK 263 million, with a pre-tax profit of NOK 30 million. Apart from Catch Communications, the group comprises BlueCom, EUnet and IDComnet. The Catch group has offices in Bod0, Oslo, Bergen and Sandefjord. Its shares are traded on the Oslo Stock Exchange under the ticker code CATCH. The group currently has 204 employees.

About Netcool

Micromuse's Netcool(R) software solutions provide businesses with the assurance that their applications and services are up and operating. By allowing our customers to see what's happening throughout the infrastructure in realtime, Netcool applications enable them to respond to problems before revenue-supporting services are affected.

Netcool applications install out-of-the-box, deploy rapidly and scale to the largest environments. Micromuse's flagship, Netcool/OMNIbus(TM) application, includes a library of off-the-shelf software modules that allow our customers to collect and consolidate information from more than 1,000 environments spanning applications, systems, voice and IP, cable/broadband, switches and routers, and enterprise management systems.

About Micromuse

Micromuse Inc. (Nasdaq: MUSE) is the leading provider of ultra-scalable, realtime business and service assurance software solutions. The Netcool(R) software suite provides organizations with the assurance that their IT systems are supporting and driving profits 24 hours a day. Unlike traditional infrastructure management systems, Netcool solutions provide realtime end-to-end visibility and accurate troubleshooting from a business perspective. Such business intelligence allows organizations to respond to problems quickly, streamline workflow processes and improve business uptime. Micromuse customers include BT, Cable & Wireless, Deutsche Telekom, EarthLink, ITC DeltaCom, J.P. Morgan Chase, MCI, T-Mobile, and Verizon. Headquarters are located at 139 Townsend Street, San Francisco, Calif. 94107; (415) 538-9090. 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 are the properties of their respective owners.

Any statements contained in this press release that do not describe historical facts may constitute forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Any forward-looking statements we make are based on current expectations, and are subject to a number of risks and uncertainties. Actual results could differ materially.

Factors that could cause actual future results to differ materially from the forward-looking statements include: fluctuations in customer demand; the Company's ability to manage its growth (including the ability to hire sufficient sales and technical personnel); risks associated with the expansion of the Company's distribution channels; risk of new product introductions and customer acceptance of new products; rapid technological change which characterizes the Company's markets; risks associated with competition; risks associated with international sales; and the ability of the Company to compete successfully in the future; as well as risks relating to pending litigation, the completed restatement of certain of our financial statements, and other matters appearing under the caption "Risk Factors" in the Company's most recent Quarterly Reports on Form 10-Q and Form 10-K filed with the SEC and available on the Company's website. The Company disclaims any obligation or intention to update or revise any forward-looking statements.