I came across a really cool tool today. Not exactly new, but still pretty cool. It's called Windows SteadyState and it makes it easy to manage computers used for shared access, such as computers in libraries or schools.
Personally I see some possibilities in making a very specific paranoia disappear: You know the feeling - some visiting family member or your media naranja wants to use your laptop. But your laptop is not just any laptop. Your laptop contains code lines counted in hundreds of thousands, it contains all your mail for several yeas back and of course many of your latest party pictures. The laptop in question is indeed your precious one. ;)
Of course, all that data (or at least the important stuff) is backed up on a regular basis, and of course you have created a special account for them to use, which, among other things, disables access to the business section of the disk drive. But still, there are still things that you cannot control in ACLs and policies (yet): why is she hovering her cup of hot tea directly over the keyboard, why is he balancing the laptop on one knee while playing with the remote control to the TV?
Windows SteadyState can help you in a simple way, and make your efforts last. It makes it easy to take some 2. rank computer and make it the "shared" computer in the household, sparing your laptop from manhandling by barbarians with no respect for technology! :)
Check Windows SteadyState out here...