gimp-2.6 crashed with SIGSEGV in g_object_get()

Binary package hint: gimp

I had opened an image (jpg 500x334) with Gimp (Jaunty 64bit). I have increased the canvas height by 3 (so 500x1002), once done Gimp crashed...

Here are a few more information about my configuration :

Description: Ubuntu jaunty (development branch)
Release: 9.04
64bit with all packages updated.

gimp:
  Installed: 2.6.5-1ubuntu2
  Candidate: 2.6.5-1ubuntu2
  Version table:
 *** 2.6.5-1ubuntu2 0
        500 http://fr.archive.ubuntu.com jaunty/main Packages
        100 /var/lib/dpkg/status

I have 2GB of memory:
Memory: Total Used Free Buffers
RAM: 1975892 1908084 67808 37284
Swap: 3001280 70312 2930968

ProblemType: Crash
Architecture: amd64
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/gimp-2.6
Package: gimp 2.6.5-1ubuntu2
ProcCmdline: gimp-2.6
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: gimp
StacktraceTop:
 g_object_get () from /usr/lib/libgobject-2.0.so.0
 ?? ()
 g_closure_invoke ()
 ?? () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit_valist ()
Title: gimp-2.6 crashed with SIGSEGV in g_object_get()
Uname: Linux 2.6.28-8-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare