.
Thread 1 (process 9790):
#0  0xb7343bdb in strlen () from /lib/tls/i686/cmov/libc.so.6
#1  0xb76dc6ae in g_strdup () from /usr/lib/libglib-2.0.so.0
#2  0xb7779af5 in pango_font_description_copy ()
   from /usr/lib/libpango-1.0.so.0
#3  0xb77866e3 in pango_layout_set_font_description ()
   from /usr/lib/libpango-1.0.so.0
#4  0x08064508 in ?? ()
#5  0x080646e6 in ?? ()
#6  0x0806533d in ?? ()
#7  0x080658a2 in ?? ()
#8  0xb7ef7b89 in pkgAcquire::Run ()
   from /usr/lib/libapt-pkg-libc6.4-6.so.3.52
#9  0x080b845a in ?? ()
#10 0x0808946f in ?? ()
#11 0xb77479c9 in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#12 0xb773a62b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#13 0xb774b0f3 in ?? () from /usr/lib/libgobject-2.0.so.0
#14 0x082c9360 in ?? ()
#15 0x00000000 in ?? ()