Leaving fields blank == weird results

Got a solution. First of all, I think this is a bug for the profile module, not usernode. If someone knows how to switch this issue to be on profile (a core module), please switch it-- I don't see any core modules in the list.

Basically, all this fix does is insert blank values upon user insert/update where they are missing. Really, this should not be in "mymodule", but in profile.module.

/** 
* Implementation of hook_user().
*/
function mymodule_user ($op, &$edit, &$user) {
    
  switch ($op) {
    
    case 'insert':
    case 'after_update':
    
      // The profile module leaves fields *undefined* in the database 
      //   (not just blank) for fields the user doesn't fill in.  
      //   Here, we want to fill in default values.
    
      // Get fields that are not filled in for this user.
      $result = db_query("
            SELECT fid, type, options 
            FROM {profile_fields} 
            WHERE fid NOT IN 
                  (SELECT fid 
                   FROM {profile_values} 
                   WHERE uid=%d)
        ", $user->uid);
      
      // For each, insert a new profile_values row, with the default.
      while ($row = db_fetch_object($result)) {
        
        if      ($row->type=='checkbox') 
          $value = 0;
        elseif ($row->type=='textarea')
          $value = '';
        elseif ($row->type=='selection') {
          $value = '';
        }
        //... there are other values for $row->type, but I was too lazy 
        //  to look them all up.  You may wish to flesh out this list more,
        //  and repost.  Thx.  :-)        
        
        db_query("
            INSERT INTO {profile_values} (fid, uid, value) 
            VALUES (%d, %d, '%s')
          ", $row->fid, $user->uid, $value);
		  
      } 
      
      break;
      
  }

}