Just bought a home built in the 1980s back in October when temperatures were relatively warm. Much colder now and I'm noticing that in al the rooms/hallways, under lighting conditions you can see where the drywall (which is hung horizontally) seams are. They are generally about halfway up the wall and are nothing more than a visible line due to shadowing; there are no cracks and the walls are painted eggshell so there is a very slight sheen.
Is this pretty typical to see? Just a part of the age of the home?