I'm using Firefox Aurora on Ubuntu 12.04. I wanted to use Torbutton for certain websites, however the add-on has been causing problems, such as constantly spitting out errors about it not being able to get a mouse event or something. I uninstalled it, however since then I have some problems.
Firstly, download history no longer works (even though I re-enabled it in about:config).
Secondly, speed dial thumbnails no longer generate.
Finally, I think Sync is now broken (although I can't be sure, because I haven't synced in ages).
How do I fix it?