Comment 4 for bug 141063

regarding the backtraces, 2 things could happen:
a) The backtrace matches the one I've posted. In that case it's not necessary you dupe it, unless there's some info I haven't provided.
a) The backtrace is different, meaning that it's not referring to the same problem. Check if the problem is already reported or alternatively file a new bug report.

In general having a backtrace is very useful in order to identify where the problem is and also to check if that's already reported.
Thanks for you interest.