1. please try to use the flashplugin-nonfree package and remove the one you have in .mozilla/plugins 2. please disable all extensions one by one (with restarts in between) and see if this problem goes away. 3. please paste your xorg.conf
1. please try to use the flashplugin-nonfree package and remove the one you have in .mozilla/plugins
2. please disable all extensions one by one (with restarts in between) and see if this problem goes away.
3. please paste your xorg.conf