We just moved into a new home (built by us) several months ago. We have started to notice some cracking in the drywall in corners (inside corners) where walls meet and also where the ceiling meets the wall. The cracking isn't everywhere, just in various spots throughout the house. Most of the cracks are very thin, hairline cracks, but some of them are slightly larger. Is this just caused by normal settling or the drying and contraction of the wood? Should we wait awhile before attempting to fix these cracks(until most of the settling has occured, so we can fix them all at once)?