(e) Impairment of goodwill: The goodwill impairment charge relates to a write down of balances associated with previous acquisitions. The Company excludes the goodwill impairment charge because it is unusual in nature and does not reflect the operation of the Company's ongoing business. Additionally, its exclusion enhances the ability of investors to compare the Company’s period-over-period operating results.(f) Gain on the liquidation of a foreign subsidiary: During the third quarter of 2011, as part of an update of our tax planning strategy, we completed the liquidation of Radisys Technology Ireland Limited (“RTIL”). As a result of this liquidation we recorded a gain to reflect the realization of accumulated foreign currency translation adjustments related to RTIL. This gain represents the net unrealized foreign currency translation gains accumulated from changes in exchange rates and the related effects from the translation of assets and liabilities of RTIL. The liquidation of foreign subsidiaries occurs on an infrequent basis and management does not view the impact of this non-cash charge as indicative of the ongoing performance of the Company. As such, the Company believes it is appropriate to exclude this gain from its non-GAAP financial measures because it enhances the ability of investors to compare the Company's period-over-period operating results. (g) Income taxes: Non-GAAP income tax expense is equal to the Company's projected cash tax expense. Adjustments to GAAP income tax expense are required to eliminate the recognition of tax expense from profitable entities where we utilize deferred tax assets to offset current period tax liabilities. We believe that providing this non-GAAP figure is useful to our investors as it more closely represents the true economic impact of our tax positions. During the third quarter of 2011 the Company recorded an income tax benefit of $10.3 million related to the partial reversal of the valuation allowance recorded on our deferred tax assets. The reversal is the direct result of the addition of deferred tax liabilities associated with the acquisition of Continuous Computing during the third quarter of 2011.