[ubuntu] SSE2 and going back to Firefox

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http://ubuntuforums.org – I have been forced to use Chrome V19 since this is the last working version browser that didn't have SSE2 coding. I have 2 systems both of which have no support for SSE2 but want to go back to old faithful Firefox. IMO chrome uses far too much ram in comparison. I know this could be argued but in my 512mb laptop ubuntu 12.04 just manages to get by until I start using chrome. Switching back to Firefox is a lot smoother. This problem has been documented https://bugs.gentoo.org/show_bug.cgi?id=410547 and https://bugbase.adobe.com/index.cfm?...bug&id=3161034 can anyone advise how I would find (Hardware)