Except to the extent excused or prohibited by the Bankruptcy Code of the United States or not otherwise authorized by the Bankruptcy Court with respect to periods prior to the Closing Date, each of the Borrower and each of its Subsidiaries has filed or caused to be filed all material Federal, state and other Tax returns and reports that are required to be filed and has paid all Taxes shown to be due and payable on said returns or on any assessments made against it or any of its Property and all other material Taxes, fees or other charges imposed on it or any of its Property by any Governmental Authority (other than any the amount or validity of which are currently being contested in good faith by appropriate proceedings diligently conducted in each case, with respect to which adequate reserves in conformity with GAAP have been provided on the books of the Borrower or its Subsidiaries, as the case may be), and no tax Lien has been filed (except for any Liens for taxes, the nonpayment of which is excused or prohibited by the Bankruptcy Code, or as permitted by Section 7.1(a)), and, to the knowledge of Borrower, no claim is being asserted, with respect to any such tax, fee or other charge (other than any such Liens and claims in favor of taxing authorities outside of the United States which are not, in the aggregate, material to Borrower and its Subsidiaries taken as a whole). Neither Borrower nor any Subsidiary thereof is party to any tax sharing agreement.