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Goodwill and Intangible Assets
9 Months Ended
Jun. 30, 2011
Goodwill and Intangible Assets
6.   Goodwill and Intangible Assets
 
The changes in the carrying amount of goodwill and intangible assets for the nine months ended June 30, 2011, are as follows (dollars in thousands):
 
                 
    Goodwill     Intangible Assets  
 
Balance as of September 30, 2010
  $ 2,077,943     $ 685,865  
Acquisitions
    222,545       171,556  
Purchase accounting adjustments
    4,366       648  
Amortization
          (105,762 )
Effect of foreign currency translation
    13,701       5,292  
                 
Balance as of June 30, 2011
  $ 2,318,555     $ 757,599  
                 
 
During the nine months ended June 30, 2011, in addition to the businesses acquisitions described in Note 4 we made several purchases of intellectual property. Purchase accounting adjustments to goodwill recorded during the nine months ended June 30, 2011, included $5.2 million of releases of escrow cash related to our fiscal 2009 acquisitions. This increase in goodwill was partially offset by a $1.4 million reduction resulting from the finalization of the Spinvox purchase accounting.