I just checked and it seems to be online & functioning now.
When ever that happens to FF or any other browser - I just switch and use one of the other ones I have installed ( IE , FF or Flock) - all my bookmarks are imported so they all have the same favs /bookmarks except for an very new ones that I have added .
There is also -
Google Chrome
http://www.google.com/chrome
Opera -
http://www.opera.com/
I had Opera for awhile but it is kind of intensive and has a lot of settings that were not easy to navigate.
I found some others and will be installing & testing them -
http://download.cnet.com/avant-brows...-10150342.html
http://download.cnet.com/SlimBrowser...-10101563.html
http://download.cnet.com/Comodo-Drag...-75119680.html