Except that if FF crashes while recovering after a crash (due to some strange Javascript in one of the
tabs), it sometimes corrupts the tabs and isn't able to recover again :(
This has happened to me twice. Seems like the browser could save the tab list to a separate
directory and do an atomic (1) rename. I hate to see the same mistakes made over and over in
every code base.
(1) except this won't work on ext4 or ext3 in writeback mode as seen in recent dicussions