.
Thread 2 (Thread 0xb2db8b40 (LWP 2248)):
#0  0xb77c9424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb6948dcb in poll () from /lib/i386-linux-gnu/libc.so.6
No symbol table info available.
#2  0xb6e6224b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0xb6e53610 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0xb6e53771 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0xb6e537fe in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#6  0xb6e79143 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#7  0xb6d57d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
No symbol table info available.
#8  0xb69583de in clone () from /lib/i386-linux-gnu/libc.so.6
No symbol table info available.
.
Thread 1 (Thread 0xb4d80880 (LWP 2029)):
#0  0xb76f5ff9 in pkgPackageManager::GetArchives(pkgAcquire*, pkgSourceList*, pkgRecords*) () from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
No symbol table info available.
#1  0xb6f5d000 in ?? () from /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?)