Nexum writes “The BBC is reporting on a European Union threat to fine Microsoft up to $2.4m a day for their non-compliance with the European Commission’s demand that Windows be opened up. Back in March 2004 Microsoft was ordered to open up its Windows operating system by way of making documentation available that would assist work on interoperability with other systems, specifically: ‘non-Microsoft work group servers [should be able to] achieve full interoperability with Windows PCs and servers’. According to the article, Brussels has found MS to have not complied with the ruling, and, sounding somewhat exasperated, EU Competition Commissioner Neelie Kroes has given MS a 5 week deadline before the $2.4m/a day fines begin.”