I miss-quoted, you need WordPress 2.7+ to utilize the dashboard widget feature in Blubrry PowerPress.
To disable the Dashboard widget, go to PowerPress settings > "Service & Statistics" tab, make sure the option labeled "Dashboard Integration" is not checked.
I would highly recommend upgrading your installation of WordPress, there are many security vulnerabilities that have been fixed since 2.6.5 was released.
The future version of PowerPress 2.0 will require WordPress 2.7 or newer.