Yikes! Wall cracking?? We have several corners of our wall cracking and we don't grasp...

We have several corners of our wall cracking and we don't grasp it. There is no aggrivation to this area, but it is taking place in several corners. The house be built in 2004. We patched up one cracked nouns and it started cracking underneath the patchwork, busting at the seams so to speak.

Please click association to see picture:
http://i207.photobucket.com/albums/bb29/...

Can anyone give me a drive for this?
My middle AC section keep freezing over, using...
Answers:    From what I can see from the picture, you have hit the corner a couple of times. The corner is usually a plastic or metal piece that have been mudded on to protect the edges from self damaged when hit. If you enjoy hit the corner(dent on corner in picture) next that would have broken the corner loose. You would inevitability to put some Joint compound under the piece to be precise sticking out to help gum it back down, consequently using the joint compound, remud the edging, this should take safekeeping of the problem. The house Will settle after about 3-5 years, and this would also exact the problem. Fixing would require doing the same item as above.
Furnace and a/c won't see on?
These cracks are most likely from the house settling. This is a adjectives occurrence.