This bug has been copied from bug #586519 and has been proposed to be backported to 5.5 z-stream (EUS).
Created attachment 411400 [details] revision 2130 backported
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2010-0486.html
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: A gather operation which interrupted synchronization could have caused cluster lockup.