In its latest 10-K report Microsoft admits what we already knew. Open source has run away with its lunch money.

Three weeks ago we wrote about Microsoft’s presence in yet another Linux event. Microsoft, just as a reminder, views Linux as its number one competitor and at the same time it accuses Linux of “stealing” from Microsoft.

Signs of misery from Microsoft as Windows revenues dry up (on sub-notebooks) and GNU/Linux is increasingly adopted

Microsoft's offensive against GNU/Linux on sub-notebooks gains a familiar ally

Microsoft admits: Linux biggest threat to WinblowsHere we have it! Finally Microsoft admits that Linux is the biggest threat to its Windows operating system! Well, almost…just not that directly.

osnews.com: Microsoft's CEO Steve Ballmer had some interesting things to say yesterday about which companies Microsoft sees as its competitors in the client operating system space. You'd think Apple was their number one competitor - and you'd be wrong. Microsoft sees two other competitors as their primary adversaries.

"Highly confidential" memo from Microsoft's current patent troll shows Microsoft worrying about "Linux" even over a decade ago

Microsoft's Vista is out and Apple's Leopard is poised, but as far as Linux goes, well, hey, it's open source. That means there aren't millions of dollars in the piggy bank for a catchy media blitz. Quite frankly, if its last major revision was in 2003, why would there be? Linux has gotten so efficient that major releases have been repeatedly postponed because of lack of need.

Of all the theories behind Microsoft's assimilation of Yahoo (I think it's about eliminating a competitor under a mountain of cash), this is the most intriguing I've seen yet: According to Linux-Watch, Microsoft wants Yahoo because no huge Web-based companies use Windows products to run their back-end ... except Microsoft, of course