Danke schonmal für die Mühe die du dir da machst.
Da kommt folgendes raus:
philipp@philipp-ubuntu:~$ sudo lsof | grep apt
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/philipp/.gvfs
Output information may be incomplete.
gnome-pan 1726 philipp mem REG 8,5 72836 678254 /usr/share/locale-langpack/de/LC_MESSAGES/synaptic.mo
system-se 2492 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
system-se 2492 root mem REG 8,5 301976 326858 /usr/lib/python2.6/dist-packages/apt_pkg.so
apt-get 11550 root cwd DIR 8,5 4096 930252 /home/philipp/Desktop
apt-get 11550 root rtd DIR 8,5 4096 2 /
apt-get 11550 root txt REG 8,5 151368 497835 /usr/bin/apt-get
apt-get 11550 root mem REG 8,5 4222320 244924 /usr/lib/locale/locale-archive
apt-get 11550 root mem REG 8,5 96816 327214 /lib/libz.so.1.2.3.4
apt-get 11550 root mem REG 8,5 14696 326933 /lib/libdl-2.12.1.so
apt-get 11550 root mem REG 8,5 1572232 326669 /lib/libc-2.12.1.so
apt-get 11550 root mem REG 8,5 88384 1044864 /lib/libgcc_s.so.1
apt-get 11550 root mem REG 8,5 534832 326937 /lib/libm-2.12.1.so
apt-get 11550 root mem REG 8,5 986888 229598 /usr/lib/libstdc++.so.6.0.14
apt-get 11550 root mem REG 8,5 10648 327028 /lib/libutil-2.12.1.so
apt-get 11550 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
apt-get 11550 root mem REG 8,5 141072 326666 /lib/ld-2.12.1.so
apt-get 11550 root mem REG 8,5 36598 419396 /usr/share/locale/de/LC_MESSAGES/libapt-pkg4.10.mo
apt-get 11550 root mem REG 8,5 40655 419395 /usr/share/locale/de/LC_MESSAGES/apt.mo
apt-get 11550 root mem REG 8,5 26048 1086416 /usr/lib/gconv/gconv-modules.cache
apt-get 11550 root 0u CHR 136,0 0t0 3 /dev/pts/0 (deleted)
apt-get 11550 root 1u CHR 136,0 0t0 3 /dev/pts/0 (deleted)
apt-get 11550 root 2u CHR 136,0 0t0 3 /dev/pts/0 (deleted)
apt-get 11550 root 3r CHR 1,3 0t0 4744 /dev/null
apt-get 11550 root 4uW REG 8,5 0 533278 /var/lib/apt/lists/lock
apt-get 11550 root 5r FIFO 0,8 0t0 199785 pipe
apt-get 11550 root 6r FIFO 0,8 0t0 199787 pipe
apt-get 11550 root 7r FIFO 0,8 0t0 199789 pipe
apt-get 11550 root 8w FIFO 0,8 0t0 199786 pipe
apt-get 11550 root 9r FIFO 0,8 0t0 199791 pipe
apt-get 11550 root 10w FIFO 0,8 0t0 199788 pipe
apt-get 11550 root 11r FIFO 0,8 0t0 199793 pipe
apt-get 11550 root 12w FIFO 0,8 0t0 199790 pipe
apt-get 11550 root 13r FIFO 0,8 0t0 199829 pipe
apt-get 11550 root 14w FIFO 0,8 0t0 199792 pipe
apt-get 11550 root 15r FIFO 0,8 0t0 199883 pipe
apt-get 11550 root 16w FIFO 0,8 0t0 199794 pipe
apt-get 11550 root 18w FIFO 0,8 0t0 199830 pipe
apt-get 11550 root 20w FIFO 0,8 0t0 199884 pipe
http 11563 root txt REG 8,5 60608 612307 /usr/lib/apt/methods/http
http 11563 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
http 11563 root mem REG 8,5 36598 419396 /usr/share/locale/de/LC_MESSAGES/libapt-pkg4.10.mo
http 11564 root txt REG 8,5 60608 612307 /usr/lib/apt/methods/http
http 11564 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
http 11564 root mem REG 8,5 36598 419396 /usr/share/locale/de/LC_MESSAGES/libapt-pkg4.10.mo
http 11565 root txt REG 8,5 60608 612307 /usr/lib/apt/methods/http
http 11565 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
http 11565 root mem REG 8,5 36598 419396 /usr/share/locale/de/LC_MESSAGES/libapt-pkg4.10.mo
http 11566 root txt REG 8,5 60608 612307 /usr/lib/apt/methods/http
http 11566 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
http 11566 root mem REG 8,5 36598 419396 /usr/share/locale/de/LC_MESSAGES/libapt-pkg4.10.mo
cdrom 11567 root txt REG 8,5 31368 612369 /usr/lib/apt/methods/cdrom
cdrom 11567 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
cdrom 11567 root mem REG 8,5 36598 419396 /usr/share/locale/de/LC_MESSAGES/libapt-pkg4.10.mo
gpgv 11570 root txt REG 8,5 31368 612373 /usr/lib/apt/methods/gpgv
gpgv 11570 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1
bzip2 11585 root txt REG 8,5 18968 612368 /usr/lib/apt/methods/bzip2
bzip2 11585 root mem REG 8,5 1036992 523140 /usr/lib/libapt-pkg.so.4.10.1