Original image shows up

Confirmed; it looks like a browser caching issue, as if I view just the image, it will be the old one until it is reloaded. Perhaps the image file could be renamed with a timestamp or a random string, so that the old one is not used.

You can override template_preprocess_user_picture() to accomplish this... it's a bit overkill as it'll go to the server for every user picture on the site, every time. But it's a start:

function template_preprocess_user_picture(&$variables) {
  $variables['picture'] = '';
  if (variable_get('user_pictures', 0)) {
    $account = $variables['account'];
    if (!empty($account->picture) && file_exists($account->picture)) {
      $picture = file_create_url($account->picture);
    }
    else if (variable_get('user_picture_default', '')) {
      $picture = variable_get('user_picture_default', '');
    }

    // add a random string to the end of image filenames to prevent browser caching
    $picture .= '?' . time();

    if (isset($picture)) {
      $alt = t("@user's picture", array('@user' => $account->name ? $account->name : variable_get('anonymous', t('Anonymous'))));
      $variables['picture'] = theme('image', $picture, $alt, $alt, '', FALSE);
      if (!empty($account->uid) && user_access('access user profiles')) {
        $attributes = array('attributes' => array('title' => t('View user profile.')), 'html' => TRUE);
        $variables['picture'] = l($variables['picture'], "user/$account->uid", $attributes);
      }
    }
  }
}

Subscribing

Has anyone done any progress on this?

I tried a few things but I lack the necessary coding skills to pull it off. I see 3 options:
- rename the file;
- alter the timestamp (touch);
- both.

Hhunter's solution seems rather overkill if you consider a website where post and comments have user pictures...

Ricardo

I am also experiencing this problem, but only on IE (v7) - not FF, Safari or Chrome.

But sadly, most of our users are on IE, so I can't deploy this module. Too bad, it is a really big improvement over the default flow.

Resolved in later versions.