.
Thread 1 (process 5680):
#0  0xb7f128c9 in pkgDepCache::ActionGroup::ActionGroup ()
   from /usr/lib/libapt-pkg-libc6.4-6.so.3.53
#1  0x080af477 in ?? ()
#2  0x0805900c in ?? ()
#3  0xb72f5ebc in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#4  0x08057121 in ?? ()