While trying to upgrade my WordPress installation from version 2.9 to version 2.9.1 I always got the following error:

Downloading update from http://wordpress.org/wordpress-2.9.1.zip.
Download failed.: Operation timed out with 1201840 out of -1 bytes received
Installation Failed

After doing some research using Google I found a solution to that problem:

You just need to edit the following file in order to increase the download timeout:

/wp-admin/includes/file.php

Near line 461 of file.php change the timeout value from:

$response = wp_remote_get($url, array('timeout' => 60));

to the new value of 120:

$response = wp_remote_get($url, array('timeout' => 120));

Then try again to upgrade your wordpress installation using the automatic upgrade and it should work properly now. Mine did and I am happy again!

Cheers and have fun, and leave me a comment if this post was useful for you!

Herbert

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In this article we first clarify key concepts and assumptions for personalised learning environments. Afterwards, we summarise our critique on the contemporary models for personalised adaptive learning. Subsequently, we propose our alternative, i.e. the concept of a mash-up personal learning environment that provides adaptation mechanisms for learning environment construction and maintenance. The web application mash-up solution allows learners to reuse existing (web-based) tools plus services.

The mash-up paradigm enables learners to integrate different information sources into their learning environmen. For example you could integrate youtube videos which explain your learning content in a visual way. Other integrations could be Wikipedia Links to related topics, or feeds of weblogs or website which deal with the same topics.

Through mash-up personal learning environments (MUPPLE) the user is able to build up his personalized learning envirionment fitting best the specific learning needs. MUPPLE suports the learning in achieving his learning goals.

Article: Designing for Change: Mash-Up Personal Learning Environments

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