"After 6 plus years of service, Red Hat is moving its Red Hat
Enterprise Linux 4 (RHEL 4) into a bug and security fix maintenance
phase. The move follows the release of RHEL 4.9 which is the last
update of RHEL 4.x that will include new features and hardware
"According to Red Hat, RHEL 4.9 included 200 updates including
an update version of SystemTap."