14 uses of WATCHDOG_WARNING in Drupal 4

aggregator_parse_feed in modules/aggregator.module

aggregator_refresh in modules/aggregator.module

Checks a news feed for new items.

comment_save in modules/comment.module

Accepts a submission of new or changed comment content.

cron.php in ./cron.php

drupal_access_denied in includes/common.inc

Generates a 403 error if the request is not allowed.

drupal_notify in modules/drupal.module

Sends a ping to the Drupal directory server.

drupal_not_found in includes/common.inc

Generates a 404 error if the request can not be handled.

drupal_xml_parser_create in includes/unicode.inc

Prepare a new XML parser.

ping_ping in modules/ping.module

Implementation of hook_ping().

system_update_159 in database/updates.inc

Retrieve data out of the old_revisions table and put into new revision system.

system_update_169 in database/updates.inc

user_edit_validate in modules/user.module

user_register_submit in modules/user.module

_comment_delete_thread in modules/comment.module