I put restricted option in security repository my source.list came from a kubuntu 6.06 upgrade to 7.10. in the bug https://bugs.launchpad.net/ubuntu/+source/linux-restricted-modules-2.6.20/+bug/120288 one user installed fresh 7.10 and have the same problem. I think there is some update that remove or dont put restricted repository. in web page https://launchpad.net/ubuntu/+source/linux-restricted-modules-2.6.20/+bugs?field.searchtext=&orderby=-datecreated&search=Search&field.status%3Alist=Unconfirmed&field.status%3Alist=Confirmed&field.status%3Alist=In+Progress&field.status%3Alist=Needs+Info&field.status%3Alist=Fix+Committed&field.assignee=&field.bug_reporter=&field.omit_dupes=on&field.has_patch=&field.has_no_package= we cab see many reports for tramatic upgrade from 2.6.20-15 to 2.6.20-16 and all , I think , because a restricted missing option. deb-src http://security.ubuntu.com/ubuntu feisty-security main restricted deb http://security.ubuntu.com/ubuntu feisty-security universe multiverse restricted and after a apt-get update , showed to me a restricted modules for 2.6.20-16 kernel version root@desktop-laptop:/home/desktop# apt-cache search linux-restr* linux-restricted-modules-2.6.20-15-386 - Non-free Linux 2.6.20 modules on 386 linux-restricted-modules-2.6.20-15-generic - Non-free Linux 2.6.20 modules on x86/x86_64 linux-restricted-modules-2.6.20-15-lowlatency - Non-free Linux 2.6.20 modules on x86/x86_64 avm-fritz-kernel-source - AVM Fritz! binary kernel module source fglrx-kernel-source - ATI binary kernel module source linux-restricted-modules-2.6.20-16-lowlatency - Non-free Linux 2.6.20 modules on x86/x86_64 linux-restricted-modules-lowlatency - Restricted Linux modules for low latency kernels nvidia-kernel-source - NVIDIA binary kernel module source nvidia-legacy-kernel-source - NVIDIA binary 'legacy' kernel module source linux-restricted-modules-2.6.20-16-386 - Non-free Linux 2.6.20 modules on 386 linux-restricted-modules-2.6.20-16-generic - Non-free Linux 2.6.20 modules on x86/x86_64 linux-restricted-modules-386 - Restricted Linux modules on 386. linux-restricted-modules-686 - Obsoleted by: linux-restricted-modules-generic linux-restricted-modules-common - Non-free Linux 2.6.20 modules helper script linux-restricted-modules-generic - Restricted Linux modules for generic kernels linux-restricted-modules-k7 - Obsoleted by: linux-restricted-modules-generic nvidia-new-kernel-source - NVIDIA binary 'new' kernel module source linux-restricted-modules-2.6.15-23-386 - Non-free Linux 2.6.15 modules on 386 root@desktop-laptop:/home/desktop# using apt-get upgrade command , upgraded only linux-restricted-modules-common 2.6.20.5-15.20 2.6.20.5-16.28. Dont upgraded the linux-restricted-modules-2.6.20-16-386. I needed install manually with : root@desktop-laptop:/home/desktop# apt-get upgrade Lendo Lista de Pacotes... Pronto Construindo Árvore de Dependências Reading state information... Pronto Os pacotes a seguir serão mantidos em suas versões atuais : linux-restricted-modules-386 0 pacotes atualizados, 0 pacotes novos instalados, 0 a serem removidos e 1 não atualizados. root@desktop-laptop:/home/desktop# dpkg -l linux-res* Desejado=U=Desconhecido/Instalar/Remover/aPagar/H=Manter | status=Não/Instalado/arquiv.-Config./U=Descomp./Falhou-config/H=semi-inst. |/ Erro?=(nenhum)/H=Mantido/precisa-Reinst./X=os dois problemas (status,Erro: maiúsculas=ruim) ||/ Nome Versão Descrição +++-======================================-======================================-============================================================================================ ii linux-restricted-modules-2.6.15-23-386 2.6.15.11-1 Non-free Linux 2.6.15 modules on 386 ii linux-restricted-modules-2.6.20-15-386 2.6.20.5-15.20 Non-free Linux 2.6.20 modules on 386 ii linux-restricted-modules-386 2.6.20.15.14 Restricted Linux modules on 386. ii linux-restricted-modules-common 2.6.20.5-16.28 Non-free Linux 2.6.20 modules helper script root@desktop-laptop:/home/desktop# root@desktop-laptop:/home/desktop# apt-get install linux-restricted-modules-2.6.20-16-386 Lendo Lista de Pacotes... Pronto Construindo Árvore de Dependências Reading state information... Pronto The following packages were automatically installed and are no longer required: libnl1-pre6 libnm-util0 pptp-linux networkstatus Use 'apt-get autoremove' to remove them. Pacotes sugeridos : nvidia-glx nvidia-glx-legacy nvidia-glx-new avm-fritz-firmware-2.6.20-16 Os NOVOS pacotes a seguir serão instalados: linux-restricted-modules-2.6.20-16-386 0 pacotes atualizados, 1 pacotes novos instalados, 0 a serem removidos e 1 não atualizados. É preciso fazer o download de 16,3MB de arquivos. Depois de desempacotamento, 43,0MB adicionais de espaço em disco serão usados. 0% [Conectando a security.ubuntu.com] root@desktop-laptop:/home/desktop#