Comment 3 for bug 1038438

Been very annoyed at this for a while, finally decided to investigate what it was - couldn't use HUD at all and no update has fixed this. Been broken for some weeks at least? I have two Ubuntu laptops and Firefox synced between both - both are affected by this bug.

Firefox running in debugger output for crash:
----------------------------------

(gdb) start
Function "main" not defined.
Make breakpoint pending on future shared library load? (y or [n])

Starting program: /usr/lib/firefox/firefox
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffeade1700 (LWP 16129)]
[New Thread 0x7fffea5e0700 (LWP 16130)]
[New Thread 0x7fffe516d700 (LWP 16131)]
[New Thread 0x7fffe43ce700 (LWP 16132)]
[New Thread 0x7fffe37ff700 (LWP 16133)]
[New Thread 0x7fffe27db700 (LWP 16134)]
[New Thread 0x7fffe19a6700 (LWP 16135)]
[New Thread 0x7fffe0507700 (LWP 16136)]
[New Thread 0x7fffdf7ff700 (LWP 16137)]
[New Thread 0x7fffde7dd700 (LWP 16138)]
[New Thread 0x7fffddaff700 (LWP 16139)]
[New Thread 0x7fffd67ff700 (LWP 16140)]
[New Thread 0x7fffd5dff700 (LWP 16141)]
[New Thread 0x7fffd55fe700 (LWP 16142)]
[New Thread 0x7fffd4dfd700 (LWP 16143)]
[New Thread 0x7fffd45fc700 (LWP 16144)]
[Thread 0x7fffd55fe700 (LWP 16142) exited]
[Thread 0x7fffd5dff700 (LWP 16141) exited]
[Thread 0x7fffd45fc700 (LWP 16144) exited]
[Thread 0x7fffddaff700 (LWP 16139) exited]
[New Thread 0x7fffd55fe700 (LWP 16145)]
[Thread 0x7fffd4dfd700 (LWP 16143) exited]
[New Thread 0x7fffd5dff700 (LWP 16146)]
[Thread 0x7fffd55fe700 (LWP 16145) exited]
[New Thread 0x7fffd4dfd700 (LWP 16147)]
[Thread 0x7fffd4dfd700 (LWP 16147) exited]
[New Thread 0x7fffd55fe700 (LWP 16148)]
[Thread 0x7fffd55fe700 (LWP 16148) exited]
[New Thread 0x7fffd55fe700 (LWP 16149)]
[Thread 0x7fffd55fe700 (LWP 16149) exited]
[New Thread 0x7fffd55fe700 (LWP 16150)]
[New Thread 0x7fffd4dfd700 (LWP 16151)]
[Thread 0x7fffd55fe700 (LWP 16150) exited]
[Thread 0x7fffd5dff700 (LWP 16146) exited]
[New Thread 0x7fffd55fe700 (LWP 16152)]
[Thread 0x7fffd4dfd700 (LWP 16151) exited]
[New Thread 0x7fffd4dfd700 (LWP 16153)]
[Thread 0x7fffd55fe700 (LWP 16152) exited]
[New Thread 0x7fffd5dff700 (LWP 16154)]
[Thread 0x7fffd4dfd700 (LWP 16153) exited]
[New Thread 0x7fffd4dfd700 (LWP 16155)]
[Thread 0x7fffd5dff700 (LWP 16154) exited]
[New Thread 0x7fffd5dff700 (LWP 16156)]
[Thread 0x7fffd4dfd700 (LWP 16155) exited]
[New Thread 0x7fffd55fe700 (LWP 16157)]
[New Thread 0x7fffd4dfd700 (LWP 16158)]
[Thread 0x7fffd5dff700 (LWP 16156) exited]
[Thread 0x7fffd55fe700 (LWP 16157) exited]
[New Thread 0x7fffd45fc700 (LWP 16159)]
[Thread 0x7fffd4dfd700 (LWP 16158) exited]
[New Thread 0x7fffd4dfd700 (LWP 16160)]
[Thread 0x7fffd45fc700 (LWP 16159) exited]
[New Thread 0x7fffd45fc700 (LWP 16161)]
[Thread 0x7fffd4dfd700 (LWP 16160) exited]
[New Thread 0x7fffd4dfd700 (LWP 16162)]
[Thread 0x7fffd45fc700 (LWP 16161) exited]
[New Thread 0x7fffd45fc700 (LWP 16163)]
[Thread 0x7fffd4dfd700 (LWP 16162) exited]
[New Thread 0x7fffd4dfd700 (LWP 16164)]
[Thread 0x7fffd4dfd700 (LWP 16164) exited]
[New Thread 0x7fffd4dfd700 (LWP 16165)]
[Thread 0x7fffd45fc700 (LWP 16163) exited]
[New Thread 0x7fffd45fc700 (LWP 16166)]
[New Thread 0x7fffd5dff700 (LWP 16167)]
[Thread 0x7fffd4dfd700 (LWP 16165) exited]
[New Thread 0x7fffd55fe700 (LWP 16168)]
[Thread 0x7fffd45fc700 (LWP 16166) exited]
[New Thread 0x7fffd4dfd700 (LWP 16169)]

(firefox:16125): LIBDBUSMENU-GTK-CRITICAL **: dbusmenu_menuitem_property_set_shortcut: assertion `gtk_accelerator_valid(key, modifier)' failed
[New Thread 0x7fffd45fc700 (LWP 16172)]
[New Thread 0x7fffddaff700 (LWP 16173)]
[New Thread 0x7fffce1ff700 (LWP 16174)]
[New Thread 0x7fffccaff700 (LWP 16175)]
[New Thread 0x7fffc9bff700 (LWP 16176)]
[New Thread 0x7fffc93fe700 (LWP 16177)]
[New Thread 0x7fffc87ff700 (LWP 16178)]
[New Thread 0x7fffc7bff700 (LWP 16179)]

Program received signal SIGSEGV, Segmentation fault.
0x00007fffdc6f2e88 in ?? ()
   from /<email address hidden>/components/libglobalmenu.so
(gdb)