请教fedora 10 输入秘匙显示失败是为什么？

请问一下在fedora 10 下

rpm --import /etc/pki/rpm-gpg/*

后出现：
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-10-primary: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-i386: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-ppc: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-ppc64: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-test-10-primary: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-test-i386: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-test-ia64: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-test-ppc: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-test-ppc64: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-test-x86_64: import failed.
error: /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-x86_64: import failed.

是什么原因啊？