This excerpt taken from the NYX 10-K filed Mar 25, 2008.
Movements in deferred tax liabilities
The effect of a re-calculation of deferred tax that was recognized on the sale of Clearnet to LCH.Clearnet in Paris at the reduced capital gain tax rate applicable from 2007 onwards results in a decrease of the deferred tax liabilities related to the Investments.
Where allowed, deferred tax assets have been netted with deferred tax liabilities (see Reclassified in tables above). In addition, deferred tax linked to the deferred capital gain with LCH.Clearnet is reclassified to Liabilities directly associated with disposal group assets held for sale (see also note 3.8) and a current tax asset of 0.2 million was re-classified as a deferred tax asset.