Comment 32 for bug 991552

alandaws@ABD-W510 ~ $ env DISPLAY=:0 gdb /usr/bin/gtk-window-decorator
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
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This GDB was configured as "i686-linux-gnu".
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Reading symbols from /usr/bin/gtk-window-decorator...(no debugging symbols found)...done.
(gdb) break exit
Function "exit" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (exit) pending.
(gdb) run --sync --replace
Starting program: /usr/bin/gtk-window-decorator --sync --replace
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[New Thread 0xb6cbab40 (LWP 17699)]
[New Thread 0xb62ffb40 (LWP 17700)]
The program 'gtk-window-decorator' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 11960 error_code 3 request_code 20 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

Breakpoint 1, 0xb747ffc0 in exit () from /lib/i386-linux-gnu/libc.so.6
(gdb)

The crash always happens when replying to emails in notes, seemingly when a pulldown menu appears. It happens that often that I mapped ctrl+shift+g to restart the window decorator.