Bug#699034: libwebkitgtk-1.0-0: midori and GtkLauncher crash after typing a url (cairo-surface.c assertion)

[Alberto]

Package: libwebkitgtk-1.0-0
Version: 1.8.1-3.3
Severity: grave
Justification: renders package unusable

Just open midori or GtkLauncher and type in the address bar
"http://www.facebook.com" or "http://www.twitter.com" and press Enter.
The browser automatically crashes.
This is the error shown in the terminal

GtkLauncher: /build/buildd-cairo_1.12.2-2-i386-1cmzkR/cairo-1.12.2/src/cairo-
surface.c:1591: cairo_surface_set_device_offset: Assertion `status ==
CAIRO_STATUS_SUCCESS' failed.
Aborted



-- System Information:
Debian Release: 7.0
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libwebkitgtk-1.0-0 depends on:
ii  libatk1.0-0                      2.4.0-2
ii  libc6                            2.13-37
ii  libcairo2                        1.12.2-2
ii  libdbus-1-3                      1.6.8-1
ii  libdbus-glib-1-2                 0.100-1
ii  libenchant1c2a                   1.6.0-7
ii  libfontconfig1                   2.9.0-7.1
ii  libfreetype6                     2.4.9-1.1
ii  libgail18                        2.24.10-2
ii  libgcc1                          1:4.7.2-5
ii  libgdk-pixbuf2.0-0               2.26.1-1
ii  libgeoclue0                      0.12.0-4
ii  libgl1-mesa-glx [libgl1]         8.0.5-3
ii  libglib2.0-0                     2.33.12+really2.32.4-3
ii  libgstreamer-plugins-base0.10-0  0.10.36-1
ii  libgstreamer0.10-0               0.10.36-1
ii  libgtk2.0-0                      2.24.10-2
ii  libicu48                         4.8.1.1-10
ii  libjavascriptcoregtk-1.0-0       1.8.1-3.3
ii  libjpeg8                         8d-1
ii  libpango1.0-0                    1.30.0-1
ii  libpng12-0                       1.2.49-1
ii  libsoup2.4-1                     2.38.1-2
ii  libsqlite3-0                     3.7.13-1
ii  libstdc++6                       4.7.2-5
ii  libwebkitgtk-1.0-common          1.8.1-3.3
ii  libx11-6                         2:1.5.0-1
ii  libxml2                          2.8.0+dfsg1-7
ii  libxrender1                      1:0.9.7-1
ii  libxslt1.1                       1.1.26-14
ii  libxt6                           1:1.1.3-1
ii  zlib1g                           1:1.2.7.dfsg-13

Versions of packages libwebkitgtk-1.0-0 recommends:
ii  gstreamer0.10-ffmpeg        0.10.13-5
ii  gstreamer0.10-plugins-bad   0.10.23-7
ii  gstreamer0.10-plugins-base  0.10.36-1
ii  gstreamer0.10-plugins-good  0.10.31-3+nmu1

libwebkitgtk-1.0-0 suggests no packages.

-- no debconf information