1) What's a 'slug' ? 2) Can't see the image associated with "Please enter both words below, separated by a space." If it's been removed by an add-on, it's not obvious which of 20. Disabled my best-guess "PageTweak"; after restart the image appeared for 1 round which generated a request for a valid slug, in red text mid-way between username and display name fields - not at all clear to which it refers. If slug is the equivalent to username or display name, why not simply say username or display name? Yikes! The 2nd attempt (after disabling PageTweak) failed to display the security image again, leaving me unable to register. Any ideas? Thanks. John