Crashes without signatures

[Wayne Mery]

Just viewed the very nice
http://crash-stats.mozilla.com/topcrasher/byversion/Thunderbird/3.0b4
which recently got a Socorro code update to include a category of
(signature unavailable)
which amounts to 7% of our crashes!

Not sure what it means in terms of crashes that aren't being reported in
bugs - we won't know until
https://bugzilla.mozilla.org/show_bug.cgi?id=518144
need a link to the underlying data
gets hooked up. A TB crash might look similar to FF
http://crash-stats.mozilla.com/report/index/8d3a988f-22ce-405e-973c-6df3a2091113

http://crash-stats.mozilla.com/topcrasher/byversion/Thunderbird/3.0 of
course won't register much until 3.0 gets pushed.