I am having an issue with some form of OSX autofill feature that is filling in forms on my web browser(s). For example, I have Safari autofill turned off in the app but every time I open one particular website, somehow it adds a ZIP code to a form. I have erased history/ cache/ cookies so it can't be the website doing this. I have shut off autofill in Safari. I shut off Keychain access for Safari. The fill problem happens in Firefox with the same Zip code. I even downloaded a fresh version of Navigator and it did the same thing. Obviously it is an OS issue. HELP please.