My organization has a small SharePoint server (WSS 3.0). Many of the permissions are assigned by putting an Active Directory Security Group as a user inside of a SharePoint group. Until now, this has worked fine. Recently, we noticed that when new users were added to these Active Directory Security Groups, the effective permissions did not update accordingly.
A more concrete example if I was unclear: There is a SharePoint group called 'Information Document Library Members.' This group contains the Active Directory security group 'COMPANYNAME\information'. The SharePoint group has Content Management rights to 'Folder X'. When we add new user 'John Smith' to 'COMPANYNAME\information' in Active Directory, he should automatically get permissions to Folder X, but he isn't. The 'Check Effective Permissions' tool shows only the old permissions, not the ones just added through Active Directory.
This used to work fine, but it doesn't now. We tried rebooting the SharePoint server and it did not make any difference. Any idea how to make this work properly again?