Sorry my mistake.
Here the output, it seems OK now:
Code
root@openmediavault:/# rm /etc/apt/sources.list.d/plexmediaserver.list
root@openmediavault:/# rm -f /etc/apt/sources.list.d/plexmediaserver.list
root@openmediavault:/# rm /etc/apt/sources.list.d/plexmediaserver.list
rm: kan ‘/etc/apt/sources.list.d/plexmediaserver.list’ niet verwijderen: Bestand of map bestaat niet
root@openmediavault:/# apt-get update
Genegeerd file: Release.gpg
Genegeerd file: Release
Genegeerd file: Translation-nl_NL
Genegeerd file: Translation-nl
Genegeerd file: Translation-en
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy Release.gpg
Geraakt [url]http://ppa.launchpad.net[/url] precise Release.gpg
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates Release.gpg
Geraakt [url]http://dh2k.omv-extras.org[/url] virtualbox-wheezy-mirror Release.gpg
Geraakt [url]http://packages.openmediavault.org[/url] kralizec Release.gpg
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy Release
Geraakt [url]http://ppa.launchpad.net[/url] precise Release
Geraakt [url]http://packages.openmediavault.org[/url] kralizec-proposed Release.gpg
Geraakt [url]http://dh2k.omv-extras.org[/url] plex-wheezy-mirror Release.gpg
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates Release
Geraakt [url]http://packages.openmediavault.org[/url] kralizec Release
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller Release.gpg
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy/main Sources
Geraakt [url]http://packages.openmediavault.org[/url] kralizec-proposed Release
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller-testing Release.gpg
Geraakt [url]http://ppa.launchpad.net[/url] precise/main i386 Packages
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy/main i386 Packages
Geraakt [url]http://debian.yeasoft.net[/url] wheezy Release.gpg
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy/main Translation-nl
Geraakt [url]http://ppa.launchpad.net[/url] precise/main Translation-en
Geraakt [url]http://dh2k.omv-extras.org[/url] virtualbox-wheezy-mirror Release
Geraakt [url]http://packages.openmediavault.org[/url] kralizec/main i386 Packages
Geraakt [url]http://debian.yeasoft.net[/url] wheezy Release
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy/main Translation-en
Geraakt [url]http://dh2k.omv-extras.org[/url] plex-wheezy-mirror Release
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/main Sources
Geraakt [url]http://packages.openmediavault.org[/url] kralizec/partner i386 Packages
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/contrib Sources
Geraakt [url]http://dh2k.omv-extras.org[/url] kralizec-miller Release
Geraakt [url]http://debian.yeasoft.net[/url] wheezy/main i386 Packages
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/non-free Sources
Geraakt [url]http://security.debian.org[/url] wheezy/updates Release.gpg
Geraakt [url]http://dh2k.omv-extras.org[/url] kralizec-miller-testing Release
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/main i386 Packages/DiffIndex
Geraakt [url]http://security.debian.org[/url] wheezy/updates Release
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/contrib i386 Packages
Geraakt [url]http://dh2k.omv-extras.org[/url] virtualbox-wheezy-mirror/main i386 Packages
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/non-free i386 Packages
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/contrib Translation-en
Geraakt [url]http://security.debian.org[/url] wheezy/updates/main Sources
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/main Translation-en/DiffIndex
Geraakt [url]http://ftp.nl.debian.org[/url] wheezy-updates/non-free Translation-en
Geraakt [url]http://security.debian.org[/url] wheezy/updates/contrib Sources
Geraakt [url]http://packages.openmediavault.org[/url] kralizec-proposed/main i386 Packages
Geraakt [url]http://security.debian.org[/url] wheezy/updates/non-free Sources
Geraakt [url]http://dh2k.omv-extras.org[/url] plex-wheezy-mirror/main i386 Packages
Geraakt [url]http://security.debian.org[/url] wheezy/updates/main i386 Packages
Geraakt [url]http://security.debian.org[/url] wheezy/updates/contrib i386 Packages
Geraakt [url]http://security.debian.org[/url] wheezy/updates/non-free i386 Packages
Geraakt [url]http://security.debian.org[/url] wheezy/updates/contrib Translation-en
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller/main i386 Packages/DiffIndex
Geraakt [url]http://packages.omv-extras.org[/url] kralizec Release.gpg
Geraakt [url]http://security.debian.org[/url] wheezy/updates/main Translation-en
Genegeerd [url]http://debian.yeasoft.net[/url] wheezy/main Translation-nl_NL
Geraakt [url]http://security.debian.org[/url] wheezy/updates/non-free Translation-en
Genegeerd [url]http://debian.yeasoft.net[/url] wheezy/main Translation-nl
Genegeerd [url]http://debian.yeasoft.net[/url] wheezy/main Translation-en
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-testing Release.gpg
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller-testing/main i386 Packages/DiffIndex
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-vb Release.gpg
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-plex Release.gpg
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec/main Translation-nl_NL
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-btsync Release.gpg
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec/main Translation-nl
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec/main Translation-en
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec/partner Translation-nl_NL
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec/partner Translation-nl
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec/partner Translation-en
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec-proposed/main Translation-nl_NL
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec-proposed/main Translation-nl
Genegeerd [url]http://packages.openmediavault.org[/url] kralizec-proposed/main Translation-en
Geraakt [url]http://packages.omv-extras.org[/url] kralizec Release
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-testing Release
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-vb Release
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-plex Release
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-btsync Release
Genegeerd [url]http://dh2k.omv-extras.org[/url] virtualbox-wheezy-mirror/main Translation-nl_NL
Genegeerd [url]http://dh2k.omv-extras.org[/url] virtualbox-wheezy-mirror/main Translation-nl
Genegeerd [url]http://dh2k.omv-extras.org[/url] virtualbox-wheezy-mirror/main Translation-en
Genegeerd [url]http://dh2k.omv-extras.org[/url] plex-wheezy-mirror/main Translation-nl_NL
Geraakt [url]http://packages.omv-extras.org[/url] kralizec/main i386 Packages
Genegeerd [url]http://dh2k.omv-extras.org[/url] plex-wheezy-mirror/main Translation-nl
Genegeerd [url]http://dh2k.omv-extras.org[/url] plex-wheezy-mirror/main Translation-en
Geraakt [url]http://dh2k.omv-extras.org[/url] kralizec-miller/main i386 Packages
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller/main Translation-nl_NL
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller/main Translation-nl
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller/main Translation-en
Geraakt [url]http://dh2k.omv-extras.org[/url] kralizec-miller-testing/main i386 Packages
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller-testing/main Translation-nl_NL
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller-testing/main Translation-nl
Genegeerd [url]http://dh2k.omv-extras.org[/url] kralizec-miller-testing/main Translation-en
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-testing/main i386 Packages
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-vb/main i386 Packages
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-plex/main i386 Packages
Geraakt [url]http://packages.omv-extras.org[/url] kralizec-btsync/main i386 Packages
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec/main Translation-nl_NL
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec/main Translation-nl
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec/main Translation-en
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-testing/main Translation-nl_NL
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-testing/main Translation-nl
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-testing/main Translation-en
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-vb/main Translation-nl_NL
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-vb/main Translation-nl
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-vb/main Translation-en
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-plex/main Translation-nl_NL
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-plex/main Translation-nl
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-plex/main Translation-en
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-btsync/main Translation-nl_NL
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-btsync/main Translation-nl
Genegeerd [url]http://packages.omv-extras.org[/url] kralizec-btsync/main Translation-en