Good Morning.. The problem I am presenting is the following: I have the newest version of firefox and since about 3 months I started to have problems slowing or almost blocking some pages that before opened without any problem. The message that a site is making firefox slow is displayed. But why? If I open these same pages for years and this has never happened .. I do not know how much firefox to have. I am a Firefox user of the first versions but honestly if I continue with these problems I will stop using them ..