Description of problem:

Created 20k groups on AD server. When assigning large LDAP groups in role assignment UI, the browser displays a warning message about unresponsive recript in Firefox 10.0.2.

Please refer attached screenshot for the browser warning message. 

Clicking on 'Continue' button on the browser message continues to display the same warning message repeatatively.

Version-Release number of selected component (if applicable):

Browser Version: Firefox 10.0.2

Build Version: 3.2.0.ALPHA_QA
Build Number: 1878d58:5e6b489

How reproducible:

Always

Steps to Reproduce:

1. Navigate to the Administration->System Settings->LDAP Configuration Properties

2. Enable LDAP page querying

3. Set the Group search page size 
( Tested with low value Ex: 10 and high value Ex: 20000)

4. Enter other LDAP configuration properties and save.
(LDAP server has 20k groups created)

5. Navigate to Administration->Roles

6. Navigate to the 'LDAP Groups' tab of the new/existing roles.

7. Assign all the LDAP groups available in the 'Available Groups' section using ">>" button.

8. After a few seconds, browser displays a warning message about unresponsive recript.

9. Click on 'Continue' button on the browser message. It continues to display the same warning message about unresponsive recript.

Actual results:

Assigning large LDAP groups in role assignment UI displays a browser warning about unresponsive recript.

Expected results:

User should be able to assign large number of LDAP groups in role assignment UI.

Additional info: