Last night I left the Desktop for a while and when I came back, Thunderbird, which had been sitting in the systray (Firetray) had disappeared.

Each time I restarted Thunderbird the programme launched, sat a few seconds then disappeared.

I ran "Thunderbird" in terminal and the result was "Segmentation fault". I looked in the logs and then I started searching the forum, Mozilla, Google and found a few comments about segfault but nothing to help me.

I had not run any updates yesterday or changed anything on my (up until then) nicely behaving Ubuntu 10.10.

Anyone have any ideas please - any more information I should try to get from my system?