glibc should be rebuilt for F13/rawhide, to address the fastbin issue described on BZs 593396 and 589706 (for RHEL6).
glibc-2.12-2 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/glibc-2.12-2
glibc-2.12-2 has been pushed to the Fedora 13 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update glibc'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/glibc-2.12-2
glibc-2.12-2 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
*** Bug 597828 has been marked as a duplicate of this bug. ***