This excerpt taken from the RVBD 8-K filed Apr 30, 2009.
2. PURCHASE PRICE ALLOCATION
We acquired Mazu Networks, Inc. (Mazu) on February 19, 2009, by means of a merger of a wholly-owned subsidiary with and into Mazu, such that Mazu became a wholly-owned subsidiary of ours. We acquired Mazu, among other reasons, to meet enterprise and service provider customer demands by extending our suite of WAN optimization products to include global application performance, reporting and analytics.
The estimated acquisition date fair value of consideration transferred, assets acquired and the liabilities assumed for Mazu are presented below, represents our best estimates.