Microsoft's Steve Ballmer claims that Linux infringes on some as-yet undisclosed MS intellectual property, and that therefore Linux users owe them money! Computerworld has an article presenting both sides of what is sure to become a hotly-contested and closely-watched news story.
I recall that the SCO litigation made waves throughout the open source community, yet Linux still exists. When a company as large and powerful as Microsoft becomes involved, things should get very interesting. People building critical systems on Linux will now be forced to at least consider that they may be at some kind of risk...
It's kind of funny to think about "Linux customers" though. Is that like being an "air customer"? Sure you can buy air from certain suppliers, or have services built around air, but air is essentially available to anybody in its basic form at no cost :-)
