Searched issues, don't seem to find this issue.

Drupal v6.17, all caches and performance turned off to troubleshoot.
Latest dev verision of content_profile (updated to troubleshoot this issue)

Briefly, situation applies when:

Users that have registered and not yet created a content profile (no CP fields are required on registration, only some core profile fields)

Said users profiles are viewed by either an anonymous or authenticated user

Result is User account login for anonymous users, and the viewing visitors own profile page if they are authenticated. URL stays/displays same for both - eg. domain.com/user/bob-smith (the intended profile to view) - so, no url redirection taking place.

User1 CAN see the intended profile - slim data, but a name and a photo and a couple more fields...

Permissions checked and re-checked cause it seems like a permissions issue. USER MODULE - "access user profiles" is allowed for anon users, of course.

IF the intended user has a Content Profile created, then it is viewed fine by both anonymous and authenticated.

Thanks. Can't seem to track this thing down.