It's official. The universe is dying.

[Anomalocaris]

Alex, out of curiosity, is there such a thing as perpetual motion in the universe?
eg: planets spinning around the sun, etc

or must THAT also come to an end at some stage by loss of energy somewhere? (any latency issues here)

Even if you ignore tidal friction, a planetary system is basically a gravitational wave emitter and would gradually lose its rotation to gravity waves which then get redshifted away.  We are however talking loooong times here, orders of magnitude longer than the current age of the universe.

Tidal friction is not forever.

Tidal friction retard relative angular motion.    Eventually,   if the moon revolves in the opposite direction from the planet's rotation, and the planet's rotational angular momentum exceeds the surplus orbital angular momentum of the moon, the moon will crash into the planet, ending relative angular motion and thus ending tidal friction, 
Or if the moon revolve in the same direction as the planet's rotation, the moon and the planet would slowly become completely tidal locked so that rotation of both the moon and the planet become synchronized with the period of revolution of the moon around the planet.   When that happens relative angular motion stops and the tidal bulge stays permanent at one place, and there would be no more friction.

I believe both of these would occur in relative short period of time, no more than a few times the current age of the universe.  Nothing on the time scale of loss of orbital energy through gravity wave emission of ordinary planets and stars.