Microsoft's attitude towards open-source...

The news is circulating since a few days, but I was suprised to not see discussions about it but in a few forums.

It should reveal the real Microsoft's attitude towards open source (think of .NET, Mono, SilverLight etc...) - no criticism here, I believe in freedom, including the right of corporates to pursue their own strategies.

But when we, weaker or stronger opensource advocates, criticize Sun, let's take things in the right perspective. Sun makes mistakes, as any human-made thing or organization does. But not only it's the bigger opensource donor - AFAIK it has never tried to shut down opensource competitors by means of a patent war.