Earlier this year i began to notice a dark spot along the floor on the edge of the wall opposite a bath in my house. It got longer and longer up to 2.5 ft before i investigated a loose time in that bath and found that there was a quarter-sized hole in it. I have made sure not to use that shower for a while (have second bath) to see if the spot would retreat or fade. it is still there and just getting lighter in color, but seems like its still growing. I also made sure that there was no water around the toilets and that flappers and such are noiseless.
Onto the floor being unlevel. I feel the floor slanting as you walk through spots in the house, and until recently, I thought that it was b/c my building was so old. Now im beginning to notice that all the slants point in the direction of that spot on the wall.
I guess my question for the forum is: How severe do you think this sounds? Do you think the floor will give way? How much danger am I in? Obviously I need to have this inspected by a home inspector (had one when I bought the place a year and half ago) and then repaired, but what am I looking at here?
Thanks for any input from the readers. This is a very informative site b/c of you all.