Hello,
I'm hoping someone out there can help me with this stressful situation.
This past summer I bought my first house, and I started to notice some imperfections in the hardwood. There are several spots of raised darkened wood that is hollow underneath (see pictures below). I've attempted to fix a couple spots by digging out the area and filling with some wood filler. However, over the last several months the problems have started to progress, and I'm not sure the best solution.
The house has been treated for termites, but there has been no signs of infestation in months. Yet these problem are still progressing beneath my feet.

Please check out these pictures. If you have any advice, please let me know. Thank you!

Here is a section I noticed some raised wood back in September:
http://i.imgur.com/Vq82vcUh.jpg

Here it is today:
http://i.imgur.com/mFhvmnUh.jpg (Notice the raised dark sections growing)

Here is a spot that I attempted to patch (poorly) back in September:
http://i.imgur.com/e5R3jaCh.jpg

And here it is today, even worse:
http://i.imgur.com/AozwXmCh.jpg

It's gotten really bad in some sections, and I'm sure some boards will need to be replaced. But I need to figure out how to stop the bleeding!


Thanks for any help or advice you can give!
Happy Holidays

Also, another bonus issue, if anyone know what this is. The floor is covered with these rough marks that I don't know how to fix:
http://i.imgur.com/OiDaCguh.jpg
http://i.imgur.com/K8Q8PCv.jpg
http://i.imgur.com/z6SWJny.jpg