If you can't post a picture, how about further information? Big bubbles? Tiny bubbles? Do they appear in the surface of the flooring (what kind is it?) Do they seem to be under the flooring and making the flooring bubble? Are there any water lines nearby? It could be as simple as the lineoleum (?) flooring not being glued down properly... or it could be something totally different. Tell us all you see and know!
Mrs. NorCal Bambi (traveling in S Tardis)