6 theme calls to user-picture.tpl.php in Drupal 6

template_preprocess_comment in modules/comment/comment.module

Process variables for comment.tpl.php.

template_preprocess_node in includes/theme.inc

Process variables for node.tpl.php

template_preprocess_profile_block in modules/profile/profile.module

Process variables for profile-block.tpl.php.

template_preprocess_profile_listing in modules/profile/profile.module

Process variables for profile-listing.tpl.php.

user_edit_form in modules/user/user.module

user_user in modules/user/user.module

Implementation of hook_user().