Not many things make the founder of the Ubuntu distro Mark Shuttleworth nervous, but recommending people replace Windows with Linux on their desktop, it seems, is one of them.

This coming from someone who's been catapulted out of our atmosphere to spend time in the freezing vacuum of space.

Shuttleworth, though, reckons people should think about why they want to change Windows for Linux, and re-engineer their infrastructure and the way they are working, rather than doing a simple rip and replace.

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