I'm not able to install anything

[Rodrigo Augusto da Silva]

this is msg, please

Parece haver aqui um erro de programação no aptdaemon, o programa que permite a você instalar/remover programas e realizar outras tarefas relacionadas ao gerenciamento de pacotes. Por favor, reporte esse erro em http://launchpad.net/aptdaemon/+filebug e tente novamente.

Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 768, in simulate
    return self._simulate_helper(trans, status_path)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 936, in _simulate_helper
    return depends, status, self._cache.required_download, \
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 218, in required_download
    pm.get_archives(fetcher, self._list, self._records)
SystemError: E:I wasn't able to locate file for the libva1 package. This might mean you need to manually fix this package.