Update manager and synaptic package manager no longer working

steven@Stevens-laptop:~$ sudo fuser -vvv /var/lib/dpkg/lock
sudo: unable to resolve host Stevens-laptop
[sudo] password for steven:
steven@Stevens-laptop:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.04
DISTRIB_CODENAME=natty
DISTRIB_DESCRIPTION="Ubuntu 11.04"
steven@Stevens-laptop:~$ uname -a
Linux Stevens-laptop 2.6.38-14-generic #58-Ubuntu SMP Tue Mar 27 18:48:46 UTC 2012 i686 i686 i386 GNU/Linux
steven@Stevens-laptop:~$ sudo rm /var/lib/apt/lists/lock
sudo: unable to resolve host Stevens-laptop
rm: cannot remove `/var/lib/apt/lists/lock': No such file or directory
steven@Stevens-laptop:~$ sudo cp -arf /var/lib/dpkg /var/lib/dpkg.backup
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo mv /var/lib/dpkg/status /var/lib/dpkg/status-bad
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo cp /var/lib/dpkg/status-old /var/lib/dpkg/status
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo mv /var/lib/dpkg/available /var/lib/dpkg/available-bad
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo cp /var/lib/dpkg/available-old /var/lib/dpkg/available
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo rm -rf /var/lib/dpkg/updates/*
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo rm -rf /var/lib/apt/lists
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo rm /var/cache/apt/*.bin
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo mkdir /var/lib/apt/lists
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo mkdir /var/lib/apt/lists/partial
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ LANG=C;sudo apt-get clean
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ LANG=C;sudo apt-get autoclean
sudo: unable to resolve host Stevens-laptop
Reading package lists... Error!
E: Type 't/screenlets/ppa/ubuntu' is not known on line 1 in source list /etc/apt/sources.list.d/screenlets-ppa-natty.list
E: The list of sources could not be read.
E: The package lists or status file could not be parsed or opened.
steven@Stevens-laptop:~$ LANG=C;sudo apt-get --purge autoremove
sudo: unable to resolve host Stevens-laptop
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
  libgdata1.7-cil* libgkeyfile1.0-cil* libgtk-sharp-beans-cil*
  libgudev1.0-cil* libmono-zeroconf1.0-cil* libtaglib2.0-cil*
  libubuntuone1.0-cil*
0 upgraded, 0 newly installed, 7 to remove and 0 not upgraded.
6 not fully installed or removed.
After this operation, 2130 kB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 183098 files and directories currently installed.)
Removing libgdata1.7-cil ...
Removing libgdata1.7-cil from Mono
Removing libgkeyfile1.0-cil ...
Removing libgkeyfile1.0-cil from Mono
Removing libgtk-sharp-beans-cil ...
Removing libgudev1.0-cil ...
Removing libgudev1.0-cil from Mono
Removing libmono-zeroconf1.0-cil ...
Removing libmono-zeroconf1.0-cil from Mono
Removing libtaglib2.0-cil ...
Removing libtaglib2.0-cil from Mono
Removing libubuntuone1.0-cil ...
Removing libubuntuone1.0-cil from Mono
Setting up google-chrome-stable (18.0.1025.162-r131933) ...
Setting up libwbclient0 (2:3.5.8~dfsg-1ubuntu2.4) ...
Setting up libsmbclient (2:3.5.8~dfsg-1ubuntu2.4) ...
Setting up samba-common (2:3.5.8~dfsg-1ubuntu2.4) ...
Setting up samba-common-bin (2:3.5.8~dfsg-1ubuntu2.4) ...
Setting up smbclient (2:3.5.8~dfsg-1ubuntu2.4) ...
Processing triggers for menu ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
steven@Stevens-laptop:~$ LANG=C;sudo apt-get update -o APT::Cache-Limit=25165824sudo: unable to resolve host Stevens-laptop
E: Type 't/screenlets/ppa/ubuntu' is not known on line 1 in source list /etc/apt/sources.list.d/screenlets-ppa-natty.list
E: The list of sources could not be read.
steven@Stevens-laptop:~$ sudo dpkg --configure -a
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ sudo dpkg --clear-avail
sudo: unable to resolve host Stevens-laptop
steven@Stevens-laptop:~$ LANG=C;sudo apt-get -f install
sudo: unable to resolve host Stevens-laptop
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
steven@Stevens-laptop:~$ LANG=C;sudo apt-get --fix-missing install
sudo: unable to resolve host Stevens-laptop
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
steven@Stevens-laptop:~$ LANG=C;sudo apt-get update -o APT::Cache-Limit=25165824 && sudo apt-get dist-upgrade
sudo: unable to resolve host Stevens-laptop
E: Type 't/screenlets/ppa/ubuntu' is not known on line 1 in source list /etc/apt/sources.list.d/screenlets-ppa-natty.list
E: The list of sources could not be read.
steven@Stevens-laptop:~$