I cannot get the green arrows to go back or forward to pages already used to work. What do I do?
If I go to a page, then click on a link, it goes to the link, but then I cannot hit the back arrow because it remains gray. Before I downloaded the newest version, I was always able to do this. Now I cannot.
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Possibly this - Locked or damaged places.sqlite - MozillaZine Knowledge Base
Try http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems