Motorola Atrix 4G :: Screen Freezing Under Running Apps Tab

When I click the menu button, settings, and manage apps, the screen goes to the 'Manage Apps" screen under the "Running Apps." The phone shows the circular loading icon and never loads. The phone doesn't freeze- I can go back to the home screen and such. If I go to settings, applications, and manage applications, the same screen shows up but under the "downloaded" applications tab and there is no problem. It would be much easier to just go to manage apps under the running apps tab so I can force close.