See IF permissions.default.image in [http://kb.mozillazine.org/About:config about:config] has value 1 (Default) type in the address bar '''about:config''' then press the button''' i'll be careful i promise''' then type in the bar '''permissions.default.image''' then '''right-click''' on it, select '''modify''', type '''1''' , click '''OK''', exit firefox and restart-it. see for info : [http://kb.mozillazine.org/Permissions.default.image Permissions.default.image] see also: [http://kb.mozillazine.org/Images_or_animations_do_not_load Images or animations do not load] thank you Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.