After promising to alter its new operating system, Vista, it has apparently not allowed access to the core of the 64 bit version of Vista which they believe is necessary to provide real security. Such access had been allowed them with Windows XP.
Microsoft says it has complied, providing a list of the things it has done and disclaiming all knowledge of what the complainers are talking about.
Negotiations continue but time is running out if Vista is to be shipped for launch in January.