So why are they using an universal Turing machine for such stuff? What they need is an iMac with OSX or, even better, a set-top box. Or what about a computer booted from a Linux Live system with only their data stored f.e. on a 32 MB CF card?
Ehm sorry, but configuration and backups are running costs that clearly have to be taken into account, whether they like it or not.
I'm usually pretty harsh and direct, but not insulting. Instead of telling them how to get their crippled configuration of a crappy software a bit less crippled, I'm telling that they don't need that software and uninstalling it saves from a lot of hassle.
But that doesn't help if they just want to hear what they like to hear.