How to resolve "Failed to fetch" problems ...

[joe at actionline.com]

Tried to update Linux Mint installation today and got lots of "Failed to
fetch" hits and other error messages as in this screenshot:

- - http://www.upquick.com/temp/update.failed.jpg

Tried several times and got different results with different items
showing as "failed" each time.  Two different examples listed below.

How can I resolve this problem?


UPDATE###xserver-xorg###1:7.6+12ubuntu2###1:7.6+12ubuntu1###76374###xorg###This
package depends on the full suite of the server and drivers for the X.Org
X server.  It does not provide the actual server itself.
UPDATE###python-crypto###2.4.1-1ubuntu0.1###2.4.1-1###293068###python-crypto###A
collection of cryptographic algorithms and protocols, implemented for use
from Python. Among the contents of the package:

Could not download all repository indexes
The repository may no longer be available or could not be contacted
because of network problems. If available an older version of the failed
index will be used. Otherwise the repository will be ignored. Check your
network connection and ensure the repository address in the preferences
is correct.

Failed to fetch http://packages.linuxmint.com/dists/maya/Release.gpg 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/main/binary-i386/Packages 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/upstream/binary-i386/Packages 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/import/binary-i386/Packages 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/import/i18n/Translation-en_US 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/import/i18n/Translation-en 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/main/i18n/Translation-en_US 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/main/i18n/Translation-en  Unable
to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/upstream/i18n/Translation-en_US 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/upstream/i18n/Translation-en 
Unable to connect to packages.linuxmint.com:http:
Some index files failed to download. They have been ignored, or old ones
used instead.

Failed to fetch
http://packages.linuxmint.com/dists/maya/import/i18n/Translation-en_US 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/import/i18n/Translation-en 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/main/i18n/Translation-en_US 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/main/i18n/Translation-en  Unable
to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/upstream/i18n/Translation-en_US 
Unable to connect to packages.linuxmint.com:http:
Failed to fetch
http://packages.linuxmint.com/dists/maya/upstream/i18n/Translation-en 
Unable to connect to packages.linuxmint.com:http:
Some index files failed to download. They have been ignored, or old ones
used instead.