Welcome to the Forum Jetster:
Yes, there is some settling or shifting there somewhere. When a basement floor cracks, it is usually because the concrete was placed on un-compacted earth, there is no reinforcing wire in it, they didn't use any expansion control or control joints. OR the concrete was subjected to freezing and subsequent heaving. The walls are probably cracked because of poor backfill practices.
To repair the floor you could get a concrete saw and cut out a space 1' wide stradling the crack. If there is no expansion joint at the walls, you can palce it in the 1' trench (on both sides). After you place the new concrete use a 16d nail to rake out a groove at the cuts, to be filled with silicone caulk after the concrete sets.
As for the walls; I would take a wait and see posture. See if the cracks get exceptionally larger or some of the blocks begin to protude into the basement area or water begins to pour in.
Where is your home located (general area) I'm vaguely familiar with Taylor homes and some of their problems.