Workaround for October 2010 Cumulative Update for SharePoint 2010

In case you have already applied the October 2010 Cumulative Update you might either have had luck and not had any issues or it might have left the update in an incomplete state. If you suspect the update did not complete correctly, you will have to:

1. Go to Central Administration
2. Manage Service Applications
3. Manage User Permissions of the User Profile Service Application
4. Add the accounts that are not working correctly ( the default ones will be listed automatically )

More details are available at:

http://blogs.msdn.com/b/sharepoint/archive/2010/11/06/details-and-workaround.aspx