Dear list, after a whole bunch of fresh upgrades yesterday, 2012/05/12, I can not unzip with File Roller (default app), with expanding tar.gz still working. Here are the two error messages: */There is no command installed for Zip archive files. Do you want to search for a command to open this file?/* Then I click on search command button, it brings a new window: */There was an internal error trying to search for applications: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.PackageKit was not provided by any .service files/* I have no certitude, but I suspect the outdated polkit 0.104 could be the culprit. There is a new 0.105 version since a few weeks on the website: http://cgit.freedesktop.org/polkit/snapshot/polkit-0.105.tar.gz Following instructions, I was able to build it fine, but I don't want to make install on my system, as I understand it is a good way to break it. I decided to create a package following the Archwiki. Here is my PKGBUILD file : /*# $Id$ # Maintainer: Jan de Groot <jgc@archlinux.org> pkgname=polkit pkgver=0.105 pkgrel=2 pkgdesc="Application development toolkit for controlling system-wide privileges" arch=(i686 x86_64) license=('LGPL') url="http://www.freedesktop.org/wiki/Software/PolicyKit" depends=('glib2' 'pam' 'expat') makedepends=('intltool' 'gtk-doc' 'gobject-introspection') replaces=('policykit') options=('!libtool') source=(http://cgit.freedesktop.org/polkit/snapshot/$pkgname-$pkgver.tar.gz) md5sums=('ad070a194d444fa89f627fd54a124fad') build() { cd $pkgname-$pkgver autoconf ./autogen.sh make } check() { cd $pkgname-$pkgver make -k check } package() { cd $pkgname-$pkgver make DESTDIR="$pkgdir" install install -m644 "$srcdir/polkit.pam" "$pkgdir/etc/pam.d/polkit-1" }*/ I corrected the old 0.104 one according to the new changes. I have problem with md5sums, and have no real idea how to write the numbers. makepkg returns an error : /*Validating source files with md5sums... polkit-0.105.tar.gz ... FAILED*/ So 2 questions : how to deal with this md5sums error? Once this issue is solved, can I makepkg and install on my system, whitout breaking anything? TY for any help.