After installing sources for the new firefox, I was happily getting daily updates for 3.6. Yesterday, however, I noticed that I hadn't had an update for a while, so I started update manager, and then tried again in terminal. I'm getting some intermittent results here. I ran a script to check my keys out: #! /bin/sh # Simple script to check for all PPAs refernced in your apt sources and # to grab any signing keys you are missing from keyserver.ubuntu.com. # Additionally copes with users on launchpad with multiple PPAs # (e.g., ~asac) # # Author: Dominic Evans https://launchpad.net/~oldman # License: LGPL v2 for APT in `find /etc/apt/ -name *.list`; do grep -o "^deb http://ppa.launchpad.net/[a-z0-9\-]\+/[a-z0-9\-]\+" $APT | while read ENTRY ; do # work out the referenced user and their ppa USER=`echo $ENTRY | cut -d/ -f4` PPA=`echo $ENTRY | cut -d/ -f5` # some legacy PPAs say 'ubuntu' when they really mean 'ppa', fix that up if [ "ubuntu" = "$PPA" ] then PPA=ppa fi # scrape the ppa page to get the keyid KEYID=`wget -q --no-check-certificate https://launchpad.net/~$USER/+archive/$PPA -O- | grep -o "1024R/[A-Z0-9]\+" | cut -d/ -f2` sudo apt-key adv --list-keys $KEYID >/dev/null 2>&1 if [ $? != 0 ] then echo Grabbing key $KEYID for archive $PPA by ~$USER sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com $KEYID else echo Already have key $KEYID for archive $PPA by ~$USER fi done done echo DONE This returned me the text "Already have key 1654E635 for archive ppa by ~firerabbit Already have key AA1C92B0 for archive ppa by ~gwibber-team Already have key 77558DD0 for archive ppa by ~do-core Already have key DA6DEEAA for archive ppa by ~globalmenu-team Already have key 5AAB5553 for archive ppa by ~gnote Already have key 72D340A3 for archive ppa by ~gwibber-daily Already have key 2D9A3C5B for archive ppa by ~webkit-team Already have key 0624A220 for archive ppa by ~tualatrix Already have key 247510BE for archive ppa by ~ubuntu-mozilla-daily Already have key A1F196A8 for archive ppa by ~pidgin-developers DONE" Next I ran nohup sudo apt-get update>>update.txt I got the output: "Ign file: apt-build Release.gpg Ign file: apt-build/main Translation-en_US Get:1 file: apt-build Release [89B] Ign file: apt-build/main Packages Get:2 http://archive.canonical.com jaunty Release.gpg [189B] Get:3 http://ppa.launchpad.net jaunty Release.gpg [307B] Get:4 http://download.virtualbox.org jaunty Release.gpg [197B] Hit http://archive.mmu.edu.my jaunty Release.gpg Get:5 http://packages.medibuntu.org jaunty Release.gpg [197B] Hit http://deb.opera.com lenny Release.gpg Get:6 http://security.ubuntu.com jaunty-security Release.gpg [189B] Get:7 http://dl.google.com stable Release.gpg [189B] Ign http://archive.mmu.edu.my jaunty/main Translation-en_US Ign http://dl.google.com stable/non-free Translation-en_US Ign http://dl.google.com stable/main Translation-en_US Get:8 http://dl.google.com stable Release [1308B] Ign http://archive.mmu.edu.my jaunty/universe Translation-en_US Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:9 http://dl.google.com stable/non-free Packages [954B] Hit http://ppa.launchpad.net jaunty Release.gpg Ign http://download.virtualbox.org jaunty/non-free Translation-en_US Get:10 http://download.virtualbox.org jaunty Release [3454B] Ign http://download.virtualbox.org jaunty Release Hit http://download.virtualbox.org jaunty/non-free Packages Get:11 http://dl.google.com stable/main Packages [613B] Ign http://security.ubuntu.com jaunty-security/universe Translation-en_US Ign http://linux.getdropbox.com jaunty Release.gpg Ign http://archive.mmu.edu.my jaunty/multiverse Translation-en_US Ign http://download.skype.com stable Release.gpg Ign http://packages.medibuntu.org jaunty/free Translation-en_US Ign http://linux.getdropbox.com jaunty/main Translation-en_US Ign http://security.ubuntu.com jaunty-security/main Translation-en_US Ign http://deb.opera.com lenny/non-free Translation-en_US Hit http://deb.opera.com lenny Release Ign http://archive.mmu.edu.my jaunty/restricted Translation-en_US Hit http://archive.mmu.edu.my jaunty-security Release.gpg Hit http://archive.mmu.edu.my jaunty-updates Release.gpg Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:12 http://ppa.launchpad.net jaunty Release.gpg [307B] Ign http://linux.getdropbox.com jaunty Release Ign http://download.skype.com stable/non-free Translation-en_US Ign http://deb.opera.com lenny/non-free Packages Hit http://deb.opera.com lenny/non-free Packages Ign http://security.ubuntu.com jaunty-security/multiverse Translation-en_US Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:13 http://ppa.launchpad.net jaunty Release.gpg [307B] Ign http://archive.mmu.edu.my jaunty-updates/universe Translation-en_US Ign http://linux.getdropbox.com jaunty/main Packages Ign http://download.skype.com stable Release Hit http://linux.getdropbox.com jaunty/main Packages Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:14 http://ppa.launchpad.net jaunty Release.gpg [307B] Ign http://security.ubuntu.com jaunty-security/restricted Translation-en_US Hit http://download.skype.com stable/non-free Packages Ign http://archive.mmu.edu.my jaunty-updates/main Translation-en_US Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:15 http://ppa.launchpad.net jaunty Release.gpg [307B] Get:16 http://security.ubuntu.com jaunty-security Release [49.6kB] Ign http://security.ubuntu.com jaunty-security Release Hit http://security.ubuntu.com jaunty-security/universe Packages Hit http://security.ubuntu.com jaunty-security/main Packages Ign http://archive.mmu.edu.my jaunty-updates/multiverse Translation-en_US Hit http://security.ubuntu.com jaunty-security/multiverse Packages Hit http://security.ubuntu.com jaunty-security/restricted Packages Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:17 http://ppa.launchpad.net jaunty Release.gpg [307B] Ign http://archive.mmu.edu.my jaunty-updates/restricted Translation-en_US Hit http://archive.mmu.edu.my jaunty-backports Release.gpg Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:18 http://ppa.launchpad.net jaunty Release.gpg [307B] Ign http://archive.mmu.edu.my jaunty-backports/universe Translation-en_US Ign http://ppa.launchpad.net jaunty/main Translation-en_US Ign http://archive.canonical.com jaunty/partner Translation-en_US Hit http://ppa.launchpad.net jaunty Release.gpg Get:19 http://archive.canonical.com jaunty Release [7862B] Ign http://archive.canonical.com jaunty Release Ign http://archive.mmu.edu.my jaunty-backports/main Translation-en_US Ign http://archive.canonical.com jaunty/partner Packages Ign http://ppa.launchpad.net jaunty/main Translation-en_US Get:20 http://ppa.launchpad.net jaunty Release.gpg [307B] Ign http://archive.mmu.edu.my jaunty-backports/multiverse Translation-en_US Ign http://archive.canonical.com jaunty/partner Sources Ign http://archive.mmu.edu.my jaunty-backports/restricted Translation-en_US Hit http://archive.canonical.com jaunty/partner Packages Ign http://ppa.launchpad.net jaunty/main Translation-en_US Hit http://archive.mmu.edu.my jaunty Release Hit http://archive.canonical.com jaunty/partner Sources Hit http://archive.mmu.edu.my jaunty-security Release Hit http://archive.mmu.edu.my jaunty-updates Release Hit http://archive.mmu.edu.my jaunty-backports Release Hit http://archive.mmu.edu.my jaunty/main Packages Get:21 http://ppa.launchpad.net jaunty Release [74.6kB] Hit http://ppa.launchpad.net jaunty Release Ign http://ppa.launchpad.net jaunty Release Hit http://archive.mmu.edu.my jaunty/universe Packages Hit http://archive.mmu.edu.my jaunty/multiverse Packages Hit http://archive.mmu.edu.my jaunty/restricted Packages Get:22 http://ppa.launchpad.net jaunty Release [74.6kB] Hit http://archive.mmu.edu.my jaunty/universe Sources Ign http://ppa.launchpad.net jaunty Release Hit http://archive.mmu.edu.my jaunty/main Sources Hit http://archive.mmu.edu.my jaunty/multiverse Sources Hit http://archive.mmu.edu.my jaunty/restricted Sources Hit http://archive.mmu.edu.my jaunty-security/universe Sources Hit http://archive.mmu.edu.my jaunty-security/main Sources Hit http://archive.mmu.edu.my jaunty-security/multiverse Sources Ign http://packages.medibuntu.org jaunty/non-free Translation-en_US Hit http://archive.mmu.edu.my jaunty-security/restricted Sources Hit http://archive.mmu.edu.my jaunty-updates/universe Packages Hit http://archive.mmu.edu.my jaunty-updates/main Packages Hit http://archive.mmu.edu.my jaunty-updates/multiverse Packages Hit http://archive.mmu.edu.my jaunty-updates/restricted Packages Hit http://archive.mmu.edu.my jaunty-updates/universe Sources Hit http://archive.mmu.edu.my jaunty-updates/main Sources Hit http://archive.mmu.edu.my jaunty-updates/multiverse Sources Hit http://archive.mmu.edu.my jaunty-updates/restricted Sources Hit http://archive.mmu.edu.my jaunty-backports/universe Packages Get:23 http://ppa.launchpad.net jaunty Release [52.9kB] Hit http://archive.mmu.edu.my jaunty-backports/main Packages Ign http://ppa.launchpad.net jaunty Release Hit http://archive.mmu.edu.my jaunty-backports/multiverse Packages Hit http://archive.mmu.edu.my jaunty-backports/restricted Packages Hit http://archive.mmu.edu.my jaunty-backports/universe Sources Hit http://archive.mmu.edu.my jaunty-backports/main Sources Hit http://archive.mmu.edu.my jaunty-backports/multiverse Sources Hit http://archive.mmu.edu.my jaunty-backports/restricted Sources Get:24 http://ppa.launchpad.net jaunty Release [74.6kB] Ign http://ppa.launchpad.net jaunty Release Get:25 http://packages.medibuntu.org jaunty Release [11.7kB] Ign http://packages.medibuntu.org jaunty Release Get:26 http://ppa.launchpad.net jaunty Release [74.7kB] Ign http://ppa.launchpad.net jaunty Release Hit http://packages.medibuntu.org jaunty/free Packages Hit http://packages.medibuntu.org jaunty/non-free Packages Get:27 http://ppa.launchpad.net jaunty Release [74.6kB] Ign http://ppa.launchpad.net jaunty Release Get:28 http://ppa.launchpad.net jaunty Release [74.6kB] Hit http://ppa.launchpad.net jaunty Release Ign http://ppa.launchpad.net jaunty Release Get:29 http://ppa.launchpad.net jaunty Release [74.7kB] Hit http://ppa.launchpad.net jaunty/main Packages Ign http://ppa.launchpad.net jaunty Release Ign http://ppa.launchpad.net jaunty/main Packages Hit http://ppa.launchpad.net jaunty/main Packages Ign http://ppa.launchpad.net jaunty/main Packages Hit http://ppa.launchpad.net jaunty/main Packages Hit http://ppa.launchpad.net jaunty/main Packages Hit http://ppa.launchpad.net jaunty/main Packages Hit http://ppa.launchpad.net jaunty/main Packages Get:30 http://ppa.launchpad.net jaunty/main Packages [7660B] Get:31 http://ppa.launchpad.net jaunty/main Sources [2259B] Hit http://ppa.launchpad.net jaunty/main Packages Hit http://ppa.launchpad.net jaunty/main Packages Hit http://ppa.launchpad.net jaunty/main Packages Fetched 6306B in 10s (591B/s) W: GPG error: http://download.virtualbox.org jaunty Release: The following signatures were invalid: BADSIG DCF9F87B6DFBCBAE Sun Microsystems, Inc. (xVM VirtualBox archive signing key)