.
Thread 2 (LWP 2248):
#0  0xb77c9424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb6948dcb in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#2  0xb6e6224b in poll (__timeout=-1, __nfds=1, __fds=0xb2400468) at /usr/include/i386-linux-gnu/bits/poll2.h:46
No locals.
#3  g_poll (fds=0xb2400468, nfds=1, timeout=-1) at /build/buildd/glib2.0-2.35.8/./glib/gpoll.c:132
No locals.
#4  0xb6e53610 in g_main_context_poll (n_fds=1, fds=0xb2400468, timeout=<optimized out>, context=0x93f2fb8, priority=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3995
        poll_func = <optimized out>
#5  g_main_context_iterate (context=context@entry=0x93f2fb8, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3696
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0xb2400468
        nfds = 1
#6  0xb6e53771 in g_main_context_iteration (context=0x93f2fb8, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:3762
        retval = <optimized out>
#7  0xb6e537fe in glib_worker_main (data=0x0) at /build/buildd/glib2.0-2.35.8/./glib/gmain.c:5427
No locals.
#8  0xb6e79143 in g_thread_proxy (data=0x8526350) at /build/buildd/glib2.0-2.35.8/./glib/gthread.c:798
        thread = 0x8526350
#9  0xb6d57d78 in start_thread (arg=0xb2db8b40) at pthread_create.c:311
        __res = <optimized out>
        pd = 0xb2db8b40
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1227452416, 0, 4001536, -1294237016, 1551392829, 1099000373}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0xb69583de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131
No locals.
.
Thread 1 (LWP 2029):
#0  0xb76f5ff9 in pkgPackageManager::GetArchives (this=0x865f170, Owner=0x0, Sources=0xb6f5d000, Recs=0xb6f1e9d9 <g_object_unref+169>) at packagemanager.cc:73
        I = 0x86b4d80
        ordering = <optimized out>
#1  0xb6f5d000 in ?? () from /tmp/apport_sandbox_U2wNxJ/usr/lib/i386-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)