[fizzbatter]

I think the right answer would be to force reboots at the right time, but - and this is the technical challenge - ensure that you can bring the users environment mostly (almost entirely) back to normal. Eg, store memory states, bring everything that the user wants back as it was before the reboot.

That's likely a pipe dream, as apps do a bunch of complicated things - but it seems like a merger of security and UX. I'm not saying it's possible.. just that it seems like the best compromise.