Michael Dell, CEO of Dell, has gone on the record as saying server-side Linux is growing faster than Windows at the computer behemoth.
On the server side Linux continues to grow nicely, a bit faster than Windows. We're seeing a move to Linux in critical applications, and Linux migration has not slowed down.
Dell also noted that for all Microsoft's bluster about Linux patent violations, Microsoft hasn't given Dell a call to talk through legal liability (or anything else related to its IP) for shipping Linux servers and desktops. Given the buddy-buddy relationship between the two, one would think Dell would be one of the first to get a call. Nada.
Perhaps Microsoft is looking for a troll to sue Dell. I hear you can find them down in Texas. :-)