~$ vrms
Non-free packages with status other than installed on erfan-ubuntu
libfaac0 ( dei) AAC audio encoder (library)
Contrib packages installed on erfan-ubuntu
ttf-mscorefonts-installer Installer for Microsoft TrueType core fonts
virtualbox x86 virtualization solution - base binaries
virtualbox-dkms x86 virtualization solution - kernel module sources fo
virtualbox-qt x86 virtualization solution - Qt based user interface
Contrib packages with status other than installed on erfan-ubuntu
flashplugin-installer ( dei) Adobe Flash Player plugin installer
1 non-free packages, 0.0% of 2324 installed packages.
5 contrib packages, 0.2% of 2324 installed packages.
با اینکه از مرکز نرمافزاری libfaac0و flashplugin-installer رو حذف کردم ولی بازم تو لیست میاد!!
چطور باید حذفشون کنم؟