Record duplication in profile_values table

I am having the same issue, only records are appearing 4 times since I have 4 profile fields. Did you ever resolve this?

Some people (also me) with the same problem, but instelad of using Views, using Site User List, but the problem must be when importing...
http://drupal.org/node/198282

Guys (and girls??),
I managed to fix that in my case. Please take a look at:
http://drupal.org/node/174322
The bug is still unresolved, but at least you could have your user list without duplicates.
Have fun!

The fix above was specific to that users field ids etc...

For anyone having issues with duplicate entries in the profile_values table for users when using user_import:

I ran some tests and it looks like the issue arises when hook_user is called by the profile module when the user is saved. I don't think it's passed the profile values in the way it expects and so profile_save_profile inserts a blank record into profile_values for that user, along with the one inserted by user_import.

To solve this, I (temporarily) commented out the case 'insert': line in profile_user
To comment out a line, simply add two forward slashes i.e: // in front of the line, converting it to a code comment

/modules/profile/profile.module line 177

<?php
/**
 * Implementation of hook_user().
 */
function profile_user($type, &$edit, &$user, $category = NULL) {
  switch ($type) {
    case 'load':
      return profile_load_profile($user);
    case 'register':
      return profile_form_profile($edit, $user, $category, TRUE);
    case 'update':
      return profile_save_profile($edit, $user, $category);
    case 'insert':
      //return profile_save_profile($edit, $user, $category, TRUE); //comment out this line!
    case 'view':
      return profile_view_profile($user);
    case 'form':
      return profile_form_profile($edit, $user, $category);
    case 'validate':
      return profile_validate_profile($edit, $category);
    case 'categories':
      return profile_categories();
    case 'delete':
      db_query('DELETE FROM {profile_values} WHERE uid = %d', $user->uid);
  }
}
?>

Remember to uncomment the line when you've finished importing or else the profile module will not work properly

I hope it works for you too.

Note: It would be possible to fix this issue in user_import.module (version 5.x-1.3) by adding the profile fields to the $account object before it is saved with user_save('', $account); //line 1588
That way, the profile module will handle saving the profile fields, avoiding this blank field error.

Fixed in 5.x-2.0-beta2.