CentOS5.5部署zlib致使yum使用不了，報錯Yum Segmentation Fault (core Dumped)

在一臺CentOS.5.5的機器上使用Yum時忽然報錯，提示Yum Segmentation Fault (core Dumped) ；併產生core.*文件
解決辦法：
# rpm -q zlib zlib-devel
# cp /usr/lib/libz.so.1.2.3 /usr/local/lib/
# cd /usr/local/lib                       
# ln -sf libz.so.1.2.3 libz.so            
# ln -sf libz.so.1.2.3 libz.so.1
# yum clean all