Comment 5 for bug 696115

Sorry. Let me be a bit more formal.

I suggest that laptops are either:
1) single user
    * in which case changing the time zone won't hurt other users,
or
2) physically shared amongst several people
    * in which case, they are in the same time zone, and if one user sets the zone, that is a positive benefit to other users,

Occasionally, they might be
3) multi-user, shared amongst a small cooperating group of users. In which case if someone fools with the time zone, you send them a nasty e-mail.

And they will very rarelyl be used as servers occupied by untrusted users out to cause trouble.

In use cases 1 and 2, changing time zones is a real benefit. In 3, it is largely harmless.