The Debian project has announced in a security advisory (DSA-2360-1) that the security support for Debian GNU/Linux 5.0 “Lenny” will be terminated in february 2012 :
This is an advance notice that security support for Debian GNU/Linux 5.0 (code name "lenny") will be terminated in two months. The Debian project released Debian GNU/Linux 6.0 alias "squeeze" on the 6th of February 2011. Users and distributors have been given a one-year timeframe to upgrade their old installations to the current stable release. Hence, the security support for the old release of 5.0 is going to end on the 6th of February 2012 as previously announced. Previously announced security updates for the old release will continue to be available on security.debian.org.
It’s now time to upgrade your last Lenny boxes…
Friday, January 13, 2012