Comment 11 for bug 676949

I have a slightly different callstack (though I've also seen the callstack mentioned above)

kvdveer@kvdveer-desktop:~$ gdb shotwell
GNU gdb (GDB) 7.2-ubuntu
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This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/shotwell...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/shotwell
[Thread debugging using libthread_db enabled]
[New Thread 0xb6eefb70 (LWP 4914)]
[New Thread 0xb66eeb70 (LWP 4915)]
[New Thread 0xb5eedb70 (LWP 4916)]
[New Thread 0xb56ecb70 (LWP 4917)]
[New Thread 0xb4eebb70 (LWP 4918)]
[New Thread 0xad6fdb70 (LWP 4936)]
[New Thread 0xaccffb70 (LWP 4937)]
[New Thread 0xac4feb70 (LWP 4938)]
[New Thread 0xabcfdb70 (LWP 4939)]
[New Thread 0xab4fcb70 (LWP 4940)]
[New Thread 0xaacfbb70 (LWP 4941)]
[New Thread 0xaa4fab70 (LWP 4942)]
[Thread 0xac4feb70 (LWP 4938) exited]
[Thread 0xabcfdb70 (LWP 4939) exited]
[Thread 0xad6fdb70 (LWP 4936) exited]
[Thread 0xab4fcb70 (LWP 4940) exited]
[Thread 0xaacfbb70 (LWP 4941) exited]
[Thread 0xaccffb70 (LWP 4937) exited]

Program received signal SIGSEGV, Segmentation fault.
0x00000029 in ?? ()
(gdb) trace
Tracepoint 1 at 0x29
(gdb) d
Delete all breakpoints? (y or n) y
(gdb) frame
#0 0x00000029 in ?? ()
(gdb) threads
Undefined command: "threads". Try "help".
(gdb) th
thbreak thread
(gdb) th
thbreak thread
(gdb) thread
[Current thread is 1 (Thread 0xb718e860 (LWP 4909))]
(gdb) info threads
  13 Thread 0xaa4fab70 (LWP 4942) 0x0012e416 in __kernel_vsyscall ()
  6 Thread 0xb4eebb70 (LWP 4918) 0x0012e416 in __kernel_vsyscall ()
  5 Thread 0xb56ecb70 (LWP 4917) 0x0012e416 in __kernel_vsyscall ()
  4 Thread 0xb5eedb70 (LWP 4916) 0x0012e416 in __kernel_vsyscall ()
  3 Thread 0xb66eeb70 (LWP 4915) 0x0012e416 in __kernel_vsyscall ()
  2 Thread 0xb6eefb70 (LWP 4914) 0x0012e416 in __kernel_vsyscall ()
* 1 Thread 0xb718e860 (LWP 4909) 0x00000029 in ?? ()
----<SNIP irrelevant stuff>----
(gdb) backtrace
#0 0x00000029 in ?? ()
#1 0x0020e48c in gexiv2_metadata_get_exif_tag_rational ()
   from /usr/lib/libgexiv2.so.0
#2 0x081fa368 in photo_metadata_get_rational ()
#3 0x081fb387 in photo_metadata_get_exposure_string ()
#4 0x08194af8 in ?? ()
#5 0x0819541a in ?? ()
#6 0x0819454f in ?? ()
#7 0x0819651d in ?? ()
#8 0x081956b8 in properties_update_properties ()
#9 0x0818a7b9 in ?? ()
#10 0x0811da48 in ?? ()
#11 0x01e032d1 in ?? () from /lib/libglib-2.0.so.0
#12 0x01e074e8 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#13 0x01e07cb0 in ?? () from /lib/libglib-2.0.so.0
#14 0x01e08373 in g_main_loop_run () from /lib/libglib-2.0.so.0
#15 0x016a8e89 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#16 0x0808f52b in library_exec ()
#17 0x0808fc37 in _vala_main ()
#18 0x0808fcdc in main ()

This happens with _every_ picture in my collection. Example exif data:
kvdveer@kvdveer-desktop:~/Pictures/2010/09/18$ exiv2 IMG_3748.JPG
File name : IMG_3748.JPG
File size : 3041642 Bytes
MIME type : image/jpeg
Image size : 3072 x 2048
Camera make : Canon
Camera model : Canon EOS DIGITAL REBEL
Image timestamp : 2010:09:18 09:17:26
Image number : 137-3748
Exposure time : 1/60 s
Aperture : F4.5
Exposure bias : 0 EV
Flash : No flash
Flash bias : 0 EV
Focal length : 28.0 mm
Subject distance: 0
ISO speed : 800
Exposure mode : Program (P)
Metering mode : Multi-segment
Macro mode : (0)
Image quality : Fine
Exif Resolution : 3072 x 2048
White balance : Auto
Thumbnail : image/jpeg, 7168 Bytes
Copyright :
Exif comment :