ちょっとはまったのでメモっておく。x86_64ならではのはまり。
x86_64では、rpmはx86_64/noarchのアーキテクチャであるはずだ。でもi386/i686なんかもインストールされてる。まあ気にしないっていうのも一つの回避策ではあるんだけれど、そもそもx86_64/noarchだけで動作するはずなのに余計なパッケージがインストールされているのは憎たらしい。
# rpm -qa --qf '%{name}-%{version}-%{release}.%{arch}\n' | grep i[36]86 | xargs rpm -e
これで削除されるわけだが。これをやったら不具合が出た。
つまり、x86_64とi386パッケージで同じファイルをインストールするので、i386をアンインストールすると、x86_64のパッケージはそのつもりが無いのにファイルを消しちゃう。実際に消えるファイルは以下。
/usr/share/doc/gnome-panel-2.16.1
/usr/share/doc/gnome-panel-2.16.1/AUTHORS
/usr/share/doc/gnome-panel-2.16.1/COPYING
/usr/share/doc/gnome-panel-2.16.1/ChangeLog
/usr/share/doc/gnome-panel-2.16.1/NEWS
/usr/share/doc/gnome-panel-2.16.1/README
/usr/share/locale/af/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/am/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ar/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/az/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/be/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/bg/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/bn/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/bn_IN/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/br/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/bs/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ca/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/cs/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/cy/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/da/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/de/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/dz/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/el/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/en_CA/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/en_GB/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/eo/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/es/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/et/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/eu/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/fa/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/fi/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/fr/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ga/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/gl/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/gu/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/he/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/hi/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/hr/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/hu/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/hy/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/id/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/it/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ja/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ka/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ko/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ku/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ky/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/li/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/lt/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/lv/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/mg/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/mi/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/mk/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ml/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/mn/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/mr/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ms/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/nb/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ne/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/nl/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/nn/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/nso/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/or/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/pa/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/pl/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/pt/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/pt_BR/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ro/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ru/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/rw/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/sk/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/sl/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/sq/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/sr/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/sr@Latn/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/sr@ije/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/sv/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/ta/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/te/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/th/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/tr/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/uk/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/vi/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/wa/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/xh/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/yi/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/zh_CN/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/zh_HK/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/zh_TW/LC_MESSAGES/gnome-panel-2.0.mo
/usr/share/locale/zu/LC_MESSAGES/gnome-panel-2.0.mo
とりあえず、ワークアラウンド。
# yumdownloader gnome-panel-2.16.1-7.el5.x86_64
# rpm -ivh --force gnome-panel-2.16.1-7.el5.x86_64.rpm