Is there a way to globally disable the cache of Firefox?

I run a computer lab with several linux PC (Ubuntu LTS 14.04 / latest version of Firefox). The users homedirectories are located on a file server central and limited by a diskquota. Unfortunately, Firefox takes an important part (if not all) of this quota with its cache. Is there a way to globally disable the cache?

EDIT:
Add the following lines to /etc/xul-ext/ubufox.js helped...

Pref ("browser.cache.disk.enable", false);
Pref ("browser.cache.disk.smart_size.enabled", false);
Pref ("browser.cache.disk.capacity", 0);

Add the following lines to /etc/xul-ext/ubufox.js helped...

Pref ("browser.cache.disk.enable", false); Pref ("browser.cache.disk.smart_size.enabled", false); Pref ("browser.cache.disk.capacity", 0);

Tags: Firefox

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