I am using Fedora 12 (Constantine) as my Linux OS. I agree its old. Till Firefox 39.x.x I was a very happy user of firefox. The later version starting from 40.x.x till 45.0 the browser crashes always when I open a minimum of 5 tabs. I had submitted a lot of crash reports using the Crash reporter but didn't got any response from Mozilla support team. Well today I have downloaded the 45.0 version of firefox and installed seperately. I ran through the terminal and found an issue as it showed with respect to memory allocation. Herewith attaching the screenshot. And my crash report URL is "https://crash-stats.mozilla.com/report/index/97244b8e-91e6-4a29-9670-6e62a2160316". I feel its because of missing dlls or libs in my this version of Fedora? Will Debian 5.x solve my issue? I want to use the latest version of firefox, please help me with that.