Cumulative Updates October 2011 for SharePoint Foundation 2010 and SharePoint Server 2010
Today the cumulative updates for October have been released for SharePoint Foundation and SharePoint Server 2010.
SharePoint Foundation: http://support.microsoft.com/kb/2553050
SharePoint Server: http://support.microsoft.com/kb/2553048
Take into account that for the Server Version you will need to restart the User Profile Service (as described in the KB) and remember, as with all CU's, test before applying to your production environment.