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On 2013.02.05 I installed a SL 6.3/64bit minimal, then after install I tried to install a libreoffice-base package. This has been showed to me:

I tried "yum clean metadata" and "yum clean all" but it didn't worked. The same message appeared to me for 2 days.

Today, 2013.02.07 I didn't do anything else, then tried the "yum clean metadata" then! It worked!

What does this mean that "metadata file does not match checksum"? Does it relates to security? Did someone had a proxy between me and ftp.scientificlinux.org?

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Strange indeed, Strange indeed! Good sir, I believe you have mistakenly posted on the wrong StackExchange website. Perchance you would be so kind to read the Frequently Asked Questions and indulge yourself in the chapter where it is explained which topics are off- and on-topic. Unfortunately, as I'm sure you will be able to derive yourself, this website does not deal with problems of the kind you are currently facing. May I suggest to delete your question and post it on the correct StackExchange website? A good day to you! – Lucas Kauffman Feb 8 at 10:12

migrated from security.stackexchange.com Feb 8 at 10:54

1 Answer

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Lets start with what it is - SL (or Centos or fedora) downloads a file that basically lists all the files available on the repository and information about those files. It also downloads a 'checksum' file, which is a way to quickly and uniquely identify the other file by some means.

In this case, the metadata file was corrupted while downloading so it tried another method. Firstly, this does not necessarily mean tampering or monitoring, it just means the connection may have broken at some point, or there was something wrong with the download.

Never attribute to malice what can be attributed to what's probably a random glitch. Its fairly unlikely that this (alone) would be the sign that someone's intercepting your communications.

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