Cracks in ceiling and walls
I have lived in my home for 5 years and over the last year have noticed some small cracks appearing in the ceilings and walls. ( built in 1951) The cracks run straight across the across the ceilings and have appeared in similar locations on opposite sides of the house, i.e guest bedroom has crack in same spot as master on other side of stairs. I have also noticed some of the plaster sort of bubbling/cracking in some areas.
More recently noticed one crack on inside of cellar wall behind washer/dryer.
Is this a settling situation and something to let go for a bit before patching/repair or something else. And on that note what is the best course of action.