I have a 1998 Legacy L sedan 4dr 30th Edition which has the electric
doors locking and unlocking magically by themselves while driving down
the street. Simultaneously, in past weeks I have noticed the electric
door locks sometimes work and then don't work for days at a time. The
fuses are fine.

I'm thinking that maybe this is a problem with the door lock relays.
Has anyone seen this kind of problem before?