Should we be worried about the foundation of this house?

We are looking at buying a new home. We had it inspected and the inspector seemed knowledgeale. The basement was dry for the most part but had some moist spots due to improper grading of landscaping. No bulging walls inside or our, all floors were level, windows opned and closed but some did not lock (inspector said because they were left unlocked over time and misaligned). We found some hairline cracks in each room some short and some running the length of the wall or ceiling (mostly old plaster and some sheetrock) Our major concern was that there was seperation of the quater round from the trim. On the second floor in front and rear walls the quater round is about 1" from the trim. The quater round is attached to the original hardwood and not the wall. Also, there was some cracking on the parging in the basement. The inspector said the cracking was only on the thin layer over the stone because the material doesnt flex. He said the seperation of the floor was caused by settlement and because it is original it may have been many years ago. Also, the main level shows no seperation because it is carpeted(10-15 years old). Anyone well versed in foundations have any idea if this sounds like a major issue? Also, one crack we found in a bedroom was about 1/2" wide on the plaster and looks like they had nailed something in where the crack starts.