I can't update packages after upgrading pacman to 4.0.3

Question

I know this was already treated broadly about two months ago, but I can't update after upgrading pacman because of continuous problems with certain signatures (at least one).
I have already tried this:
rm -rf /etc/pacman.d/gnupg
pacman -Scc
pacman-key --init
pacman-key --populate archlinux
But I still get this error when trying to upgrade the system:
error: virtuoso: signature from "Andrea Scarpino (Arch Linux) <[email protected]>" is invalid
error: failed to commit transaction (invalid or corrupted package)
Errors occurred, no packages were upgraded.
Could anybody help me? I'm pretty devastated with this.
Thanks!
My /etc/pacman.conf
# /etc/pacman.conf
# See the pacman.conf(5) manpage for option and repository directives
# GENERAL OPTIONS
[options]
# The following paths are commented out with their default values listed.
# If you wish to use different paths, uncomment and update the paths.
#RootDir = /
#DBPath = /var/lib/pacman/
#CacheDir = /var/cache/pacman/pkg/
#LogFile = /var/log/pacman.log
#GPGDir = /etc/pacman.d/gnupg/
HoldPkg = pacman glibc
# If upgrades are available for these packages they will be asked for first
SyncFirst = pacman
#XferCommand = /usr/bin/curl -C - -f %u > %o
#XferCommand = /usr/bin/wget --passive-ftp -c -O %o %u
#CleanMethod = KeepInstalled
Architecture = auto
# Pacman won't upgrade packages listed in IgnorePkg and members of IgnoreGroup
#IgnorePkg =
#IgnoreGroup =
#NoUpgrade =
#NoExtract =
# Misc options
#UseSyslog
#UseDelta
#TotalDownload
CheckSpace
#VerbosePkgLists
# By default, pacman accepts packages signed by keys that its local keyring
# trusts (see pacman-key and its man page), as well as unsigned packages.
#SigLevel = Optional TrustedOnly
# NOTE: You must run `pacman-key --init` before first using pacman; the local
# keyring can then be populated with the keys of all official Arch Linux
# packagers with `pacman-key --populate archlinux`.
# REPOSITORIES
# - can be defined here or included from another file
# - pacman will search repositories in the order defined here
# - local/custom mirrors can be added here or in separate files
# - repositories listed first will take precedence when packages
# have identical names, regardless of version number
# - URLs will have $repo replaced by the name of the current repo
# - URLs will have $arch replaced by the name of the architecture
# Repository entries are of the format:
# [repo-name]
# Server = ServerName
# Include = IncludePath
# The header [repo-name] is crucial - it must be present and
# uncommented to enable the repo.
# The testing repositories are disabled by default. To enable, uncomment the
# repo name header and Include lines. You can add preferred servers immediately
# after the header, and they will be used before the default mirrors.
#[testing]
#SigLevel = PackageRequired
#Include = /etc/pacman.d/mirrorlist
[core]
SigLevel = PackageRequired
Include = /etc/pacman.d/mirrorlist
[extra]
SigLevel = PackageRequired
Include = /etc/pacman.d/mirrorlist
#[community-testing]
#SigLevel = PackageRequired
#Include = /etc/pacman.d/mirrorlist
[community]
SigLevel = PackageRequired
Include = /etc/pacman.d/mirrorlist
# An example of a custom package repository. See the pacman manpage for
# tips on creating your own repositories.
#[custom]
#SigLevel = Optional TrustAll
#Server = file:///home/custompkgs
Last edited by [DoodoM] (2012-08-03 23:39:56)

Answer 1

Thanks everyone! I guess it was a faulty mirror.
I also had problems upgrading glibc because /lib had to be linked to /usr/lib, but I fixed it seeking for helpful tips on the forum. What I did was move everything from /lib to /usr/lib, shutdown, start adding break=postmount to kernel line, mount the filesystem, remove /lib folder, link /usr/lib to /lib and reboot. Then I reinstalled glibc and everything went well.
Now some fonts look half-cutted in Gnome Shell when the window or panel which contains them is in background and I don't know why. But it is not the first time I have "graphical artifacts" with Arch Linux on this laptop. I think has something to do with the compositing.