Strange - The motor runs fine, but the harmonic dampener/pulley doesn't
turn at all.   The power steering belt is very loose now, but the rest
seem OK.

I replaced the front bearing seal about 2.5 years ago, which means I had
to also take the dampener on and put it back on.  It's been running fine
since, so I don't think that has anything to do with it, but perhaps?  

Could it be the keys that hold this onto the crank have sheared?  Is the
crank broken?  I would have thought that something like that would be a
drastic occurrence, and the pulley should be on the ground.

TIA for any comments or suggestions