qdiff makes Xorg eats up all RAM on Oneiric

I'm unable to vizualise diff using qdiff since I've upgraded to Oneiric.

Doing a bzr qdiff on any tree of any size with or without actual difference will make Xorg take 2G of RSS and make my workstation unusable. Killing the bzr process frees the X server memory.

I have the following appearing on the terminal when the window is about to come up:
(python:13375): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed
QWidget::setMinimumSize: (/DiffWindow) The largest allowed size is (16777215,16777215)

I suspect the window is created too big :-)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: qbzr 0.21.1-1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 1.23-0ubuntu1
Architecture: amd64
Date: Thu Sep 15 17:45:56 2011
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: qbzr
UpgradeStatus: Upgraded to oneiric on 2011-09-08 (7 days ago)