请教：apt-get中认证的问题

jswanli

我使用apt-get install kubuntu-desktop来安装kde桌面，结果出现大量无法通过验证的软件包，请问我应该怎么作？出错如下：
………………………………………………………………………………
软件包 /var/cache/apt/archives/kcron_4%3a3.5.0-0ubuntu0breezy2_i386.deb 没有通 过验证！
正在验证 /var/cache/apt/archives/python2.4-dev_2.4.2-1_i386.deb ...
debsig: Origin Signature check failed. This deb might not be signed.

dpkg：处理 /var/cache/apt/archives/python2.4-dev_2.4.2-1_i386.deb (--unpack)时出错：
软件包 /var/cache/apt/archives/python2.4-dev_2.4.2-1_i386.deb 没有通过验证！
dpkg：出现过多错误，正在终止
在处理时有错误发生：
/var/cache/apt/archives/sanekonsole_0.2-0ubuntu1_i386.deb
/var/cache/apt/archives/libtdb1_1.0.6-13_i386.deb
/var/cache/apt/archives/debtags_1.4+svn20050912-0ubuntu1_i386.deb
/var/cache/apt/archives/adept_1.0_i386.deb
/var/cache/apt/archives/artsbuilder_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/liboggflac3_1.1.2-1ubuntu2_i386.deb
/var/cache/apt/archives/libsamplerate0_0.1.1-2_i386.deb
/var/cache/apt/archives/akode_4%3a3.4.3-0ubuntu1_i386.deb
/var/cache/apt/archives/libgnokii2_0.6.8-0.2_i386.deb
/var/cache/apt/archives/libgpgme11_1.0.2-1build1_i386.deb
/var/cache/apt/archives/libkleopatra1_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/libktnef1_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/kaddressbook_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/libkcal2b_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/libkdepim1a_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/akregator_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/amarok-gstreamer_2%3a1.3.7-0ubuntu4~breezy1_i386.deb
/var/cache/apt/archives/libtag1c2_1.3.1-1.1ubuntu1_i386.deb
/var/cache/apt/archives/libtunepimp2c2_0.3.0-2ubuntu7_i386.deb
/var/cache/apt/archives/amarok_2%3a1.3.7-0ubuntu4~breezy1_i386.deb
/var/cache/apt/archives/ark_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/arts_1.5.0-0ubuntu0breezy1_all.deb
/var/cache/apt/archives/enscript_1.6.4-7_i386.deb
/var/cache/apt/archives/gtk2-engines-gtk-qt_0.60-1ubuntu5_i386.deb
/var/cache/apt/archives/libkipi0_0.1.1-2build2_i386.deb
/var/cache/apt/archives/gwenview_1.2.0-0ubuntu4_i386.deb
/var/cache/apt/archives/imagemagick_6%3a6.2.3.4-1ubuntu1.1_i386.deb
/var/cache/apt/archives/ivman_0.6.3-0ubuntu2_i386.deb
/var/cache/apt/archives/libdbus-qt-1-1c2_0.36.2-0ubuntu7_i386.deb
/var/cache/apt/archives/libflac++5c2_1.1.2-1ubuntu2_i386.deb
/var/cache/apt/archives/k3blibs_0.12.7-1ubuntu1~breezy1_i386.deb
/var/cache/apt/archives/libkonq4_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/libxcomposite1_1%3a0.2.0-3_i386.deb
/var/cache/apt/archives/kdebase-data_4%3a3.5.0-0ubuntu0breezy1_all.deb
/var/cache/apt/archives/kicker_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/kcontrol_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/k3b_0.12.7-1ubuntu1~breezy1_i386.deb
/var/cache/apt/archives/libmodplug0c2_1%3a0.7-4.1_i386.deb
/var/cache/apt/archives/libxine1c2_1.0.1-1ubuntu10.2_i386.deb
/var/cache/apt/archives/kaffeine-gstreamer_0.7.1-1.3ubuntu1~breezy1_i386.deb
/var/cache/apt/archives/kaffeine_0.7.1-1.3ubuntu1~breezy1_i386.deb
/var/cache/apt/archives/kamera_4%3a3.5.0-0ubuntu0breezy1.3_i386.deb
/var/cache/apt/archives/kappfinder_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/karm_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/katapult_0.3.1-0ubuntu2~breezy1_i386.deb
/var/cache/apt/archives/kate_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/libkcddb1_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/kdemultimedia-kio-plugins_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/kaudiocreator_4%3a3.5.0-0ubuntu0breezy1_i386.deb
/var/cache/apt/archives/kcron_4%3a3.5.0-0ubuntu0breezy2_i386.deb
/var/cache/apt/archives/python2.4-dev_2.4.2-1_i386.deb
由于出现了太多错误，处理过程被终止了。
E: Sub-process /usr/bin/dpkg returned an error code (1)

jswanli

上面我废话有些多，但是我安装其他东西的时候也有认证的问题，比如libipc-sharelite-perl，他总是说同不过验证……请问如何能解决apt-get认证的问题？
以前我也碰到过这种问题，那是我安装kdevelop3的时候，无法通过验证，我只好使用dpkg -i --force bad-verify kdevelop*来安装，可是这次的包实在是太多了。
还有，通过上述命令安装的包，就没办法使用apt-get -f install来删除因为依赖关系而无法运行的包了，是否只能用dpkg -p （或者-r）来卸载？