SL4 End of Life
Scientific Linux 4 is Not Supported!
That's right. The End Of Life for Scientific Linux 4 happened (29 Feburary 2012)
There will be no more security errata, enhancements, fastbugs, or bug fixes for Scientific Linux 4.
Anyone still running production workloads on Scientific Linux 4 should be aware that no updates of any kind will be published.
Because of this, we hope everyone has completed their migration to Scientific Linux 5 or Scientific Linux 6 by now.
The existing Scientific Linux 4 directories will be archived in April 2012. People wishing to obtain a personal archive of Scientific Linux 4 can do so during that window.
Thank You
Scientific Linux Development Team