we find that the businesses using Ubuntu tend to use the server edition right now and so a windows comparison is not relevant. Ubuntu desktop is largely in the consumer space not business.
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It hardly comes as a surprise to discover that most businesses use Windows, but I did think there would be a few examples. Ive been running Ubuntu, mainly on my laptop, and find it perfectly solid and useable. In fact, it is possibly better suited for business than for consumers. The problem with Linux is that you always seem to run into one or two problems that require intricate, non-obvious steps to resolve.