8 calls to user_save() in Drupal 5

comment_controls_submit in modules/comment/comment.module

system_admin_compact_page in modules/system/system.module

user_authenticate in modules/user/user.module

user_edit_submit in modules/user/user.module

user_multiple_role_edit in modules/user/user.module

Callback function for admin mass adding/deleting a user role.

user_register_submit in modules/user/user.module

user_user_operations_block in modules/user/user.module

Callback function for admin mass blocking users.

user_user_operations_unblock in modules/user/user.module

Callback function for admin mass unblocking users.