Bug#557742: libglibmm-2.4-1c2a: inkscape and gparted fail to start, with an error pointing to libgiomm-2.4.so.1

[vlsd]

Package: libglibmm-2.4-1c2a
Version: 2.22.1-2
Severity: important

After updating to libglibmm-2.4 both inkscape and gparted fail to start, with 
the following error message (message is identical in both applications):

/usr/sbin/gpartedbin: symbol lookup error: /usr/lib/libgiomm-2.4.so.1: undefined symbol: g_file_io_stream_get_type

A Google search on this shows that it is only a problem with 2.4 and not with
previous versions, as downgrading to 2.18.1 seems to solve the issue. A related
link is https://bugs.launchpad.net/inkscape/+bug/484108.

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.30-2-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libglibmm-2.4-1c2a depends on:
ii  libc6                         2.10.1-7   GNU C Library: Shared libraries
ii  libgcc1                       1:4.4.1-4  GCC support library
ii  libglib2.0-0                  2.22.2-2   The GLib library of C routines
ii  libsigc++-2.0-0c2a            2.0.18-2   type-safe Signal Framework for C++
ii  libstdc++6                    4.4.1-4    The GNU Standard C++ Library v3

libglibmm-2.4-1c2a recommends no packages.

libglibmm-2.4-1c2a suggests no packages.

-- no debconf information