新装的系统，从上海交大源的主页http://ftp.sjtu.edu.cn/html/help.xml下载文件包替换掉以前的那些文件。然后用su运行yum update，失败。
提示：
Error: Missing Dependency: libsgutils.so.1 is needed by package libgpod
Error: Missing Dependency: python-sexy is needed by package codeina
Error: Missing Dependency: device-mapper-devel >= 1.02.02-3 is needed by package e2fsprogs-devel
请问如何解决？
