#0  0x00007fbe8977e007 in pkgCache::VerIterator::Pseudo() const () from /usr/lib/libapt-pkg.so.4.10
No symbol table info available.
#1  0x00007fbe897b7429 in pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const&) () from /usr/lib/libapt-pkg.so.4.10
No symbol table info available.
#2  0x00007fbe8978e9db in pkgDepCache::Init(OpProgress*) () from /usr/lib/libapt-pkg.so.4.10
No symbol table info available.
#3  0x00007fbe897b43fd in pkgCacheFile::BuildDepCache(OpProgress*) () from /usr/lib/libapt-pkg.so.4.10
No symbol table info available.
#4  0x00007fbe897b4982 in pkgCacheFile::Open(OpProgress*, bool) () from /usr/lib/libapt-pkg.so.4.10
No symbol table info available.
#5  0x00007fbe89a5612a in ?? () from /usr/lib/python2.6/dist-packages/apt_pkg.so
No symbol table info available.
#6  0x000000000046ccd3 in ?? ()
No symbol table info available.
#7  0x000000000041c9d7 in PyObject_Call ()
No symbol table info available.
#8  0x00000000004a48c8 in PyEval_EvalFrameEx ()
No symbol table info available.
#9  0x00000000004a6bd1 in PyEval_EvalCodeEx ()
No symbol table info available.
#10 0x00000000004a4d59 in PyEval_EvalFrameEx ()
No symbol table info available.
#11 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
No symbol table info available.
#12 0x0000000000535b50 in ?? ()
No symbol table info available.
#13 0x000000000041c9d7 in PyObject_Call ()
No symbol table info available.
#14 0x000000000042570f in ?? ()
No symbol table info available.
#15 0x000000000041c9d7 in PyObject_Call ()
No symbol table info available.
#16 0x000000000047552f in ?? ()
No symbol table info available.
#17 0x000000000046cd9f in ?? ()
No symbol table info available.
#18 0x000000000041c9d7 in PyObject_Call ()
No symbol table info available.
#19 0x00000000004a48c8 in PyEval_EvalFrameEx ()
No symbol table info available.
#20 0x00000000004a5ab0 in PyEval_EvalFrameEx ()
No symbol table info available.
#21 0x00000000004a5ab0 in PyEval_EvalFrameEx ()
No symbol table info available.
#22 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
No symbol table info available.
#23 0x00000000004a4d59 in PyEval_EvalFrameEx ()
No symbol table info available.
#24 0x00000000004a6bd1 in PyEval_EvalCodeEx ()
No symbol table info available.
#25 0x00000000004a6ca2 in PyEval_EvalCode ()
No symbol table info available.
#26 0x00000000004c702e in PyRun_FileExFlags ()
No symbol table info available.
#27 0x00000000004c7244 in PyRun_SimpleFileExFlags ()
No symbol table info available.
#28 0x00000000004180c1 in Py_Main ()
No symbol table info available.
#29 0x00007fbe8a31dd8e in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#30 0x00000000004172c9 in _start ()
No symbol table info available.