How to check the integrity of downloaded files
At the download page,
you can see [md5] links. These point to a page where
the particular filename is printed together with a
special string called 'md5 sum'. This is a 32
characters long text, which represents a check sum of
the downloaded file.
This checksum is used
for several purposes, the most common is to assure your
download was not corrupted. When md5sum of your
downloaded file is different than the one published at
the md5 page, then you can be 100% sure your file is
damaged. In that case, try to download it again.
In order to calculate
the md5 sum of your downloaded file, use a special
software. You may find it on Google, try searching for
'md5sum.exe' if you are in Windows.