The coincidence of several such articles is probably also caused by the fact that journalists have to earn a living, i.e. they have to cover the news. If the news happens to be that there's a vulnerability in X than it is reported by a number of news channels, each -- at best, although usually not -- trying to give it an original spin.
Take a totally unrelated example: if Bush visits the UK, then this will be reported by the BBC, but also by about every American channel and the majority of European ones. It will even be mentioned in passing in the rest of the world. Is this a conspiracy? I think not ;)
Just my 2 cents, -gjb-