After a Reset, Firefox should have created a folder on your desktop named Old Firefox Data. You should be able to recover your bookmarks from there once Firefox is running a little better. To rule out Flash as a potential culprit, could you try one or both of the following: (1) Disable the Protected Mode feature of the Flash Player plugin. The following pages provide different ways to do that: * Adobe support article under the heading "Last Resort": [http://forums.adobe.com/message/4468493#TemporaryWorkaround Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?] * Manual steps: https://support.mozilla.org/questions/968190?page=5#answer-509209 * Batch file to automate the manual steps: https://support.mozilla.org/questions/982093#answer-518078 Flash needs to completely unload from memory (restarting Firefox might help) before this would take effect. (2) Set Flash to Click-to-Play ("Ask to Activate"). This will delay Flash from starting on a page until you approve it, which will help distinguish Flash-generated issues from page load and layout issues. To set "Ask to Activate", open the Add-ons page using either: * Ctrl+Shift+a * orange Firefox button (or Tools menu) > Add-ons In the left column, click Plugins. Look for "Shockwave Flash" and change "Always Activate" to "Ask to Activate". When you visit a site that wants to use the Flash, you should see a notification icon in the address bar and one of the following: a link in a black rectangle in the page or an infobar sliding down between the toolbar area and the page. ''Any improvement in these scenarios?''