twitter: [android-developers] Re: Home Button

> Yes you'll have to reboot your phone. This isn't a serious security issue
> (no access to private data or otherwise elevated permissions), but is
> definitely something we don't want applications to be able to do.

Well, it can be a Denial of Service attack, basically preventing the
user from using their phone while it's rebooting (if they even think
of doing that).

I think it's fairly serious, certainly worth backporting a fix.