EU Qualified Majority Voting
The Treaty of Amsterdam extended the scope of qualified majority voting to the Council. Since it entered into force on 1 May 1999, the Council has adopted most legislative instruments by qualified majority, in codecision with the European Parliament.
However, the unanimity rule still applies in the case of 73 articles. With a membership of 27 countries after enlargement, this could paralyse the Union, as its greater size and diversity would make unanimity increasingly difficult to achieve. ........... The Nice Treaty introduced qualified majority voting into some 30 provisions.
Note especially this strange reference from the same EU explanation on the Nice Treaty voting changes:
Article 40A - Enhanced cooperation in the area of police and judicial cooperation
The Treaty of Nice maintains qualified majority voting for authorisation by the Council of enhanced cooperation in the area of police and judicial cooperation. The right of veto by a Member State has been dropped.