Thus, open a folder in icon view, bring up Show View Options and see if there is a check in front of 'Show icon preview'-if there is, and the check box at the top for 'always open in icon view' is NOT checked, then that is the default setting for all folders you open in icon view. If you do not explicitly set a folder to a specific view, then the default is automatically applied. It all depends on the view settings you have as a default, and for individual folders.
