有个上网本，虽然配置很差，但是安装的是arch，这不长时间不滚动更新出问题了，
1 :: Proceed with installation? [Y/n] 2 (247/247) checking keys in keyring [##################################################] 100% 3 (247/247) checking package integrity [##################################################] 100% 4 error: jasper: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust 5 :: File /var/cache/pacman/pkg/jasper-2.0.10-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). 6 Do you want to delete it? [Y/n] n 7 error: krb5: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust 8 :: File /var/cache/pacman/pkg/krb5-1.13.7-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). 9 Do you want to delete it? [Y/n] n 10 error: libpsl: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust 11 :: File /var/cache/pacman/pkg/libpsl-0.16.1-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). 12 Do you want to delete it? [Y/n] n 13 error: libwmf: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust 14 :: File /var/cache/pacman/pkg/libwmf-0.2.8.4-14-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). 15 Do you want to delete it? [Y/n] n 16 error: shutter: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust 17 :: File /var/cache/pacman/pkg/shutter-0.93.1-3-any.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). 18 Do you want to delete it? [Y/n] n 19 error: failed to commit transaction (invalid or corrupted package) 20 Errors occurred, no packages were upgraded.