Could you try if the solution i proposed in the duplicate #353881 does work for you (https://bugs.launchpad.net/ubuntu/+source/firefox-3.5/+bug/353881)?
I think the bug was in some package installing xulrunner 1.8.1 instead of a more recent 1.9.x, that was causing segfaults in Miro 2.0.4 too.
@cosmix
Could you try if the solution i proposed in the duplicate #353881 does work for you (https:/ /bugs.launchpad .net/ubuntu/ +source/ firefox- 3.5/+bug/ 353881)?
I think the bug was in some package installing xulrunner 1.8.1 instead of a more recent 1.9.x, that was causing segfaults in Miro 2.0.4 too.