I am using Firefox version 35.0 on Ubuntu 14.04 LTS and I can’t type and see English in any text area. All I can see are jumbled Thai letters. When I copy the text I have typed and paste in a text editor (unicode) then I can see what what I typed in English. This only happened recently. I have had no problem before (last year and before that) . Perhaps this is caused by ‘recent change’ in webpage generation or version of ‘html’ (5)?