It sounds like you're not using the graph editor to fix the splines, silverfeather.
I would create a locator or dummy object, attach that to a motion path, and then parent or use constraints for the camera to the dummy object, that way you still retain full control over it's own relative movement and rotation, but have an overall track to be guided by.
I keep forgetting where that is or what it can be used for. X_X I hate my short memory. What splines? *acts noobish*