I'm working in SharePoint 2007 web part's target audience, there is a problem to add the AD Groups as target audience, because I not able to find the AD Groups under "Distribution/Security Groups".
The connection between SharePoint and AD has been configured, because the AD Groups or AD users able to find and add in SharePoint (People and Groups), just it cannot be find in web part's target audience.
Update:
I would like to add on the user profile has been full crawled, all users in the AD Group has been imported. and yet the problem still exist.