Claud's key

:: Import PGP key 2048R/128DB977, "Claudiu Traistaru <claudiu2004@gmail.com>", created: 2013-09-11? [Y/n]
(31/31) checking package integrity                                                      [##################################################] 100%

error: libmusicbrainz5: signature from "Claudiu Traistaru <claudiu2004@gmail.com>" is unknown trust
:: File /var/cache/pacman/pkg/libmusicbrainz5-5.0.1-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: libkcddb: signature from "Claudiu Traistaru <claudiu2004@gmail.com>" is unknown trust
:: File /var/cache/pacman/pkg/libkcddb-4.11.1-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] n
error: k3b: signature from "Claudiu Traistaru <claudiu2004@gmail.com>" is unknown trust
:: File /var/cache/pacman/pkg/k3b-2.0.2-9-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.