hello all (again)

My kitchen is an extension (not brilliantly built I might add) knocked up in
the 70's. Solid floor.
I have lived here for 6 years, first time I've had to lift lino

Anyway, we have lino type flooring - cushioned plastic stuff. I pulled the
washing machine out to have a clean and I pulled the lino back a bit to
clean properly and noticed it was damp underneath. I lifted a larger patch
and discovered the floor is wet underneath. It smells only very slightly
musty. I dried it very easily with a hairdryer and I'm waiting to see if the
dampness returns where there is no lino. Many years ago, my father told me
that lino makes the floor "sweat". Is that true?