Importante!! No puedo actualizar ni meter programas con el Adept, ni acceder a conexiones Samba por el cortafuegos!

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Soy un completo novato en linux, primero me interesé por fedora, ahora vengo a kubuntu y me encuentro con que tengo firestarter y ni puedo iniciar el cortafuegos, intento acceder a las conexiones samba y me dice que un cortafuegos lo bloquea, pero, lo más importante, no puedo actualizar ni los paquetes de seguridad y tampoco instalar otros programas desde el adept, me dice que se perdió la información o se rompieron los paquetes, aunque a veces también me da la señal 6 SIGABRT,este error:
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[Thread debugging using libthread_db enabled]
[New Thread 0xb657c6c0 (LWP 7202)]
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[KCrash handler]
#6 0xb7f19410 in __kernel_vsyscall ()
#7 0xb65f4085 in raise () from /lib/tls/i686/cmov/libc.so.6
#8 0xb65f5a01 in abort () from /lib/tls/i686/cmov/libc.so.6
#9 0xb6803480 in __gnu_cxx::__verbose_terminate_handler ()
from /usr/lib/libstdc++.so.6
#10 0xb6800d05 in ?? () from /usr/lib/libstdc++.so.6
#11 0xb6800d42 in std::terminate () from /usr/lib/libstdc++.so.6
#12 0xb6800e6a in __cxa_throw () from /usr/lib/libstdc++.so.6
#13 0x080fe3c6 in ?? ()
#14 0x080fe7ca in ?? ()
#15 0x080ff035 in ?? ()
#16 0x080ff115 in ?? ()
#17 0x080fcb0d in ?? ()
#18 0x0813870e in ?? ()
#19 0x080974b0 in ?? ()
#20 0x080758dd in ?? ()
#21 0x080764ff in ?? ()
#22 0xb6e59704 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#23 0xb71e8aba in QSignal::signal () from /usr/lib/libqt-mt.so.3
#24 0xb6e787b2 in QSignal::activate () from /usr/lib/libqt-mt.so.3
#25 0xb6e80936 in QSingleShotTimer::event () from /usr/lib/libqt-mt.so.3
#26 0xb6dedc36 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#27 0xb6defa5f in QApplication::notify () from /usr/lib/libqt-mt.so.3
#28 0xb7597672 in KApplication::notify () from /usr/lib/libkdecore.so.4
#29 0xb6d7e28d in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#30 0xb6de0b19 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#31 0xb6d9364b in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#32 0xb6e08f90 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#33 0xb6e08c8e in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#34 0xb6def7df in QApplication::exec () from /usr/lib/libqt-mt.so.3
#35 0x080717b3 in ?? ()
#36 0xb65df450 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#37 0x08071401 in ?? ()

ESTOY DESESPERADO!!!!!!!!!! NECESITO AYUDA URGENTE.