Aggregator had been active on the site and cron was set to run once daily.

After it was deactivated cron continues to attempt to run it.

The Administer Reports:

Type page not found
Date Sunday, September 20, 2009 - 06:00
User Anonymous
Location http://www.example.com/aggregator/categories/1?page=7
Referrer
Message aggregator/categories/1
Severity warning

The module was reactivated and nothing was listed under feeds or categories.

What needs to be done to prevent cron from running aggregator?