Apt stopped working

[ufa]

Hello all
I dont know what happened, but my apt is working for installing/removing software anymore.

Everytime i try to install something, it returns to me:

sudo apt-get install wesnoth

Lendo Lista de Pacotes... Pronto
Construindo Árvore de Dependências
Reading state information... Pronto
É preciso fazer o download de 0B/69,8MB de arquivos.
Depois de desempacotamento, 109MB adicionais de espaço em disco serão usados.
Quer continuar [S/n] ?
Selecionando pacote previamente não selecionado libsdl-net1.2.
(Lendo banco de dados ... dpkg: erro processando /var/cache/apt/archives/libsdl-net1.2_1.2.5-7_i386.deb (--unpack):
falha em buffer_read(fd): lista de arquivos do pacote `openoffice.org-evolution': Argumento inválido
E: Sub-process /usr/bin/dpkg received a segmentation fault.

It is in portuguese, so i will translate:

(reading database.... dpkg: error processing /var/cache/apt/archives/libsdl-net1.2_1.2.5-7_i386.deb (--unpack):
Failed in buffer_read(fd): packet list archive 'openoffice.org-evolution': Invalid Argument


So i cant do anything, i tried to purge/remove the ooo-evolution, and nothing works, always i fell in the same error.
I tried:

dpkg --configure -a
apttitude install openoffice.org-evolution

With the same error. I tried to "fsck /dev/hda1 -r" but returns clean.

Does someone have a clue?

Ufa