Metadata file does not match checksum with yum install

When trying to install packages using yum, sometimes you will get following error message.

example: http://mirror.centos.org/centos/4/up...rimary.xml.gz: [Errno -1] Metadata file does not match checksum
Trying other mirror

Most probably it is because of ISPs cache

try followings one by one to solve the issue.


1. yum clean all and yum clean metadata
2. yum -y remove yum-fastestmirror
3. export http_proxy=[my actual proxy server]

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