Hi, I have an Arch Linux laptop that hasn't been updated in a long time, mainly because it started to lock-up after a few minutes uptime, requiring a power cycle. I'm now trying to update all its packages in the hope the lock-ups have gone, and if not to have a more modern base for diagnosis. A ‘pacman -Syuw’ took a few goes but signature checking had problems, as did trying to update signatures. I resorted to https://wiki.archlinux.org/index.php/Pacman/Package_signing#Resetting_all_th... that appeared to succeed. The next attempt at ‘pacman -Syuw’ gets to Total Download Size: 0.00 MiB :: Proceed with download? [Y/n] (250/250) checking keys in keyring [#############################################################################] 100% downloading required keys... :: Import PGP key 2048R/02FD1C7A934E614545849F19A6234074498E9CEE, "Christian Hesse (Arch Linux Package Signing) <arch@eworm.de>", created: 2011-08-12? [Y/n] (250/250) checking package integrity [#############################################################################] 100% error: dav1d: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is invalid :: File /var/cache/pacman/pkg/dav1d-0.4.0-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] y error: libpulse: signature from "Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>" is invalid :: File /var/cache/pacman/pkg/libpulse-13.0-2-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] This looks very similar to where I've been before. The next attempt to download those, now deleted, packages does no better. I'm going to https://wiki.archlinux.org/index.php/Pacman/Package_signing#Disabling_signat... but would still like to understand what I should attempt instead. -- Cheers, Ralph.