After upgrading to Feisty, any attempt to use the Ruby-Gnome2 Gtkmozembed bindings fails with:
$ ruby ruby-gecko.rb ruby-gecko.rb:203: [BUG] Segmentation fault ruby 1.8.5 (2006-08-25) [i486-linux] Aborted (core dumped)
After an hour of searching online, I discover that (a) the problem isn’t limited to Ruby, and (b) the fix is quite simple:
$ export LD_LIBRARY_PATH=/usr/lib/firefox
It’s things like this that make you crazy.