This afternoon the same thing happened. At the third attempt, the reporter came up for TB, but never for Firefox.
Neither Firefox nor Thunderbird ever crashed on me before.
I had a unresponsive script message of iterator.utils.jsm, this morning. A similar problem was reported at getsatisfaction. com,but there was no useful reply.
It seems that if I stick to this site I am ok, but almost anything else seems to be a problem. And, why no reporter coming up, except in one case?
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:188.8.131.52) Gecko/20110319 Firefox/3.6.16