Debian GNU/Linux 4.0 (etch) のセキュリティアップデートのサポートが2/15で終了してた。
Security Support for Debian GNU/Linux 4.0 to be discontinued on February 15th
One year after the release of Debian GNU/Linux 5.0 alias 'lenny' and
nearly three years after the release of Debian GNU/Linux 4.0 alias
'etch' the security support for the old distribution (4.0 alias
'etch') is coming to an end next month. The Debian project is proud
to be able to support its old distribution for such a long time and
even for one year after a new version has been released.
The Debian project has released Debian GNU/Linux 5.0 alias 'lenny' on
the 14th of February 2009. 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
4.0 is going to end in February 2010 as previously announced.
Previously announced security updates for the old release will
continue to be available on security.debian.org.