Linux kernel have a bug that affects the default route for ipv6 networking. Adding an extra route manually can solve the issue.
Spacewalk is an open source (GPLv2) Linux systems management solution. It is the upstream community project from which the Red Hat Network Satellite product is derived.
An updated autofs package that fixes a bug is now available under RHEL 4.x server and desktop systems.
Updated freetype packages that fix various security issues are now available for CentOS / Red Hat Enterprise Linux 3, 4, 5 and 2.1 server software.
Update brings broad refresh of hardware support and improved quality, combined with new features and enhancements in areas such as virtualization, desktop, networking, storage & clustering and security
An updated caching-nameserver package that fixes a bug is now available for RHEL AS 4.x / CentOS 4.x Linux server.
Updated openoffice.org packages to correct two security issues are now available for Red Hat Enterprise Linux 3 and 4.
Ksplice is an open source project out of MIT that automates the process of applying security patches to the Linux kernel without rebooting Linux box.