Comment 2 for bug 944710

StacktraceTop:
 __libc_message (do_abort=2, fmt=0x7f33bcbfe250 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:201
 malloc_printerr (action=3, str=0x7f33bcbfe418 "free(): invalid next size (fast)", ptr=<optimized out>) at malloc.c:5007
 handler_unref_R (handler=0x1637b00, instance=0x141b580, signal_id=<optimized out>) at /build/buildd/glib2.0-2.31.18/./gobject/gsignal.c:638
 handler_match_free1_R (instance=0x141b580, node=0x13d4c20) at /build/buildd/glib2.0-2.31.18/./gobject/gsignal.c:466
 signal_handlers_foreach_matched_R (instance=0x141b580, mask=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, closure=<optimized out>, func=<optimized out>, data=0x14c3b00, callback=0x7f33bd77c800 <g_signal_handler_disconnect>) at /build/buildd/glib2.0-2.31.18/./gobject/gsignal.c:2588