Riverbed Technology (RVBD)

Cautionary Note Regarding Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements, which include those regarding the anticipated likelihood and timing of the completion of the acquisition of Mazu Networks and the benefits expected to be provided to Riverbed and its business by the acquisition, statements relating to the expected demand for Riverbed’s products and services, and statements relating to Riverbed’s ability to meet the needs of distributed organizations. These forward-looking statements involve risks and uncertainties, as well as assumptions that, if they do not fully materialize or prove incorrect, could cause our results or outcomes to differ materially from those expressed or implied by such forward-looking statements. These risks and uncertainties include, among others, the inability to obtain necessary Mazu stockholder approval and the possibility of material adverse changes in Mazu’s business, condition, financial performance or prospects. In addition, actual outcomes are subject to other risks and uncertainties that relate more broadly to Riverbed’s overall business, including those more fully described in Riverbed’s filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended December 31, 2007, and its Quarterly Report on Form 10-Q for the third quarter of 2008. Riverbed assumes no obligation to update these forward-looking statements.

On January 20, 2009, Riverbed Technology, Inc. issued a press release announcing certain preliminary financial results for the quarter ended December 31, 2008. A copy of this press release is furnished as Exhibit 99.2 to this report, and is incorporated herein by reference.

This information shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.