The note below refer to the Outlook security limitation which taken from the solution help. Please see the help for more information.

Outlook Security Update

The Microsoft Outlook Security features help guard against viruses attachments to e-mail messages. The security features are installed Microsoft Outlook 2002, which means that a standard installation locked-down settings established by Outlook. The security features limit certain functionality with Outlook. access to the Outlook automation code. One such side affect will appear periodically as the personal migration applet accesses during the migration.

There are several approaches you can take to stop this warning the migration process. You can disable the warning message expected duration of the migration, disable the warning completely, utility to dismiss the dialog for you. Please see the following links for more information. These links information only. Advansys offers no warrantees over the information referenced below.

http://www.microsoft.com/office/ork/xp/four/outg03.htm
http://www.express-soft.com/mailmate/clickyes.html

Hope this helps.

Regards,
Advansys Support