Hey guys, this started yesterday and it's driving me crazy. I have already tried the following: Safe Mode, disabling all plugins, updating to latest Firefox version, disabling hardware acceleration, delete Places.sqlite. Firefox now hangs for 5-10 seconds whenever I try to do something that isn't simple internet browsing but sometimes even then as well, it usually has to do with opening and browsing menus, clicking buttons, mouse over effects/tooltips . I'll use the plugin manager page as an example: whenever I click the drop down menu where you choose whether to activate the plugin, Firefox hangs for 10 seconds. Once that is done, I can open that drop down menu as much as I want but if I attempt to open another drop down menu for a different plugin, it happens again. This happens both in Firefox 43 and an old version of Nightly that I'm running with a different profile. It doesn't happen in other browsers I have. Any ideas?