Now that you mention it, I notice that these packages reside beneath "Obsolete and Locally Created Packages" in aptitude. Don't ask me, where I got them from though ... If it helps you, I could send them via E-Mail to you: -rw-r--r-- 1 root root 2854290 2005-06-29 19:02 kernel-headers-2.6.11-9_2.6.11-4_amd64.deb -rw-r--r-- 1 root root 239872 2005-06-29 19:02 kernel-headers-2.6.11-9-amd64-k8_2.6.11-4_amd64.deb