When form is turned on along with Vertical Tabs, content profile and cck private field settings are not saved. For example, if you create a new content profile type 'About Me'. When you go to about me -> content profile tab and adjust the checkboxes - when you save it, it is not saving the changes. The same thing occurs for cck private fields. Form seems to be breaking certain forms from saving to the database. Turning off form (leaving vertical tabs on) gets rid of the issue.