Well we've gotten ice/snow and water off of roof, its completely tarped and we're keeping the heat on to hopefully help keep it dry. We've marked around the stains to see if they "spread". So far nothing. We'll continue this with dehumidifier until it is warm and dry to climb up top. We have checked every nook and cranny for mold and mildew, no rippling or bubbling in paneling or wallpaper, no sagging or bulging in ceiling---just the stains. We're certain we caught it in time-its just a matter of fixing and repairing. (And maybe the previous owner was privy to the fact of water leak, who knows,and that's why it was such a steal....or so we thought!) Lol either way, spring will be busy for us in Kilz, bleach and caulking/sealant! Thank you all so much for advice, for listening and helping! Hope to see you along the way!