related and professional services expenses resulting from our acquisition of Sun, and higher stock-based compensation expenses primarily resulting from higher fair values of our legacy  stock options that were recognized as expense in fiscal 2010.

Amortization of Intangible Assets:

Amortization of intangible assets increased in fiscal 2011 in comparison to fiscal 2010 primarily due to the full fiscal year’s impact from the amortization of acquired intangible assets from Sun and, to a lesser extent, additional amortization from intangible assets that we acquired since the beginning of fiscal 2010. These increases were partially offset by a reduction in amortization associated with certain of our intangible assets that became fully amortized in fiscal 2011. Amortization of intangible assets increased in fiscal 2010 in comparison to fiscal 2009 due to additional amortization from acquired intangible assets that we acquired since the beginning of fiscal 2009, including from our acquisition of Sun. See Note 7 of Notes to Consolidated Financial Statements included elsewhere in this Annual Report for additional information regarding our intangible assets (including weighted average useful lives) and related amortization.

Acquisition Related and Other Expenses:     Acquisition related and other expenses consist of personnel related costs for transitional and certain other employees, stock-based compensation expenses, integration related professional services, certain business combination adjustments after the measurement periods or purchase price allocation periods have ended, and certain other operating expenses, net. Stock-based compensation expenses included in acquisition related and other expenses resulted from unvested stock options and restricted stock-based awards assumed from acquisitions whereby vesting was accelerated upon termination of the employees pursuant to the original terms of those stock options and restricted stock-based awards. As a result of our adoption of the FASB’s revised accounting standard for business combinations as of the beginning of fiscal 2010, certain acquisition related and other expenses were recorded as expenses in our fiscal 2011 and 2010 statements of operations that had been historically included as a part of the consideration transferred and capitalized as a part of our accounting for acquisitions pursuant to previous accounting rules, primarily direct transaction costs such as professional services fees.

Fiscal 2011 Compared to Fiscal 2010:     On a constant currency basis, acquisition related and other expenses increased primarily due to the full fiscal year impact of Sun’s expense contributions, including higher transitional employee related expenses.

Fiscal 2010 Compared to Fiscal 2009:     On a constant currency basis, acquisition related and other expenses increased in fiscal 2010 primarily due to higher employee related and professional services expenses resulting from our acquisition of Sun.

Restructuring expenses:     Restructuring expenses consist of employee severance costs and may also include charges for duplicate facilities and other contract termination costs to improve our cost