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Firefox slow, drop-down menus don't show up
When I start Firefox, it works fine for a while and then for no reason it slows down, drop-down menus (within websites and in the menu bar) don't load, if you hover over a tab normally it'll give you the full title of the website but it doesn't load. This started today and has lasted all day; I've restarted Firefox and my computer, nothing has worked.
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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
I disabled all my add-ons. I did the troubleshooting page and I got a huge list of stuff that makes absolutely no sense; it didn't tell me if anything was causing any problems.