A € 899 penalty was imposed on Microsoft by the European Commission for failure to comply with the Commission's 2004 decision.  This is the first time that the EU has fined an organization for failure to comply with one of its decisions.

Here is the first paragraph of the EU Press release.

Antitrust: Commission imposes € 899 million penalty on Microsoft for non-compliance with March 2004 Decision

The European Commission has imposed a penalty payment of € 899 million on Microsoft for non-compliance with its obligations under the Commission’s March 2004 Decision (see IP/04/382) prior to 22 October 2007. Today’s Decision, adopted under Article 24(2) of Regulation 1/2003, finds that, prior to 22 October 2007, Microsoft had charged unreasonable prices for access to interface documentation for work group servers. The 2004 Decision, which was upheld by the Court of First Instance in September 2007 (see CJE/07/63 and MEMO/07/359), found that Microsoft had abused its dominant position under Article 82 of the EC Treaty, and required Microsoft to disclose interface documentation which would allow non-Microsoft work group servers to achieve full interoperability with Windows PCs and servers at a reasonable price.

The EU Press Release with more detail is here.