The trouble the government has allowed Microsoft and others to lock in the public sector and ensure young adults leaving our schools are unaware of anything else. In case you haven't noticed desktop applications have been migrating to the Web, making it rather irrelevant whether you use Linux, Mac or M$ Windows. Windows ensure greater compatibility with the majority of (often moronic) games and niche business apps, but is also inherently insecure. My only use for Windows is to test Website compatibility with the various incarnations of IE. Otherwise it's Mac or Linux. I have never had a virus on Mac or Linux or needed anti-virus software (a tax on Windows users) and I'm a very heavy user. All new software commissioned by government should be cross-platform.... End the lock-in !!