Ubuntu Linux 12.04 最近升級時，遇到幾台有下述訊息：
Setting up procps (1:3.2.8-11ubuntu6.4) ... start: Job failed to start invoke-rc.d: initscript procps, action "start" failed. dpkg: error processing procps (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of udev: udev depends on procps; however: Package procps is not configured yet. dpkg: error processing udev (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of mountall: mountall depends on udev; however: Package udev is not configured yet. dpkg: error processing mountall (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: procps udev mountall E: Sub-process /usr/bin/dpkg returned an error code (1)
遇到這個還好，想說新版套件應該就會修復此問題，但是剛好遇到 Linode 全部機器都要重開，就炸了。
出現這個問題的機器，重開自然開不了機，簡單的直接進入修復模式後，資料備份出來，直接重灌成 Debian 解決；麻煩的就參照這篇試試看，看能不能解決囉~
- 註1：在 Linode 若要進入修復模式，可見此篇：Rescue and Rebuild - Linode Guides & Tutorials
- 註2：在 Rescue 模式預設網路是通的，但是 DNS 不通，請自行到 /etc/resole.conf 增加 nameserver 8.8.8.8 之類的.