Chamilo admin page slow – disable version check
In some very strict cases of network filtering, you might realize that your Chamilo server is slow when using the administration pages, but is actually very fast for the rest and doesn’t use your server excessively in any measure.
The use of the “top” command in a GNU/Linux terminal and the corresponding non-excessive load should give you a hint that this is more of a network problem anyway.
If you have checked the “version check” box in your main admin page, every time you load the page, a query is sent to http://version.chamilo.org/version.php. If, for some reason, your server cannot access this page, it’s better for you to disable the query: go to your main/admin/index.php script and look for a call to check_system_version2(); and just put // in front the line to comment it out.