[arch-general] coping with damaging updates

[Mick]

Following yet another update that has disabled user control of USB
sticks, cameras, etc. and blocked user from shutting down from the
desktop (in my case xfce4), I am at the end of my tether.

Is there some way to be fore-warned of these updates coming online and
avoid them or be ready with clear info on how to repair the damage they
are set to create.

mick