Arch Linux

Description:
After downloading the steam package today, the package fails the install with the error "error: failed to commit transaction (invalid or corrupted package (PGP signature))". I ran a gpg key refresh after I got the error and it did not fix the problem.
It seems that the pgp key expired recently, please make sure to get the key refreshed or update the pgp key on the package.

Additional info:
* version: 1.0.0.54-1-x86_64
* This error came from a reinstall
* full log:

error: steam: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust
:: File /var/cache/pacman/pkg/steam-1.0.0.54-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: failed to commit transaction (invalid or corrupted package (PGP signature))
Errors occurred, no packages were upgraded.


Steps to reproduce:
1. Try to install steam with `pacman -Sy steam`
2. Proceed with the installation
3. Error should appear