Comment 6 for bug 449252

I've got this issue myself; gdb has one of my CPU's pegged at 100% and I have a lot of /usr/share/apport/apport-kde processes. This may have happened after Thunderbird died and I had to kill -9 one of the Thunderbird processes.

Here's what ps ax turned up for the gdb process:
gdb --batch --ex file /usr/lib/thunderbird/thunderbird-bin --ex core-file /tmp/tmpZqFuQz --ex set backtrace limit 2000 --ex p -99 --ex bt full --ex p -99 --ex thread apply all bt full --ex p -99 --ex info registers --ex p -99 --ex x/16i $pc --ex p -99 --ex print (char*) __abort_msg