Facebook stays loading forever after I enter my login and password

which browsers have you tried?

I tried firefox, chrome and chromium.

As long as we're here, youtube videos are only playing on firefox. On chrome they load forever too.

Can you give the output of:

lsb_release -a; uname -a; dpkg -l | egrep 'flash|gnash|swf|spark'; apt-cache policy firefox; apt-cache policy chrom*

Thanks

Ok, here it is:

*********************************************************************************************
lsb_release -a;

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 10.04.3 LTS
Release: 10.04
Codename: lucid

*********************************************************************************************
uname -a;

Linux marcelo-laptop 2.6.32-36-generic #79-Ubuntu SMP Tue Nov 8 22:29:26 UTC 2011 i686 GNU/Linux

*********************************************************************************************
dpkg -l | egrep 'flash|gnash|swf|spark';

ii flash-plugin 10.3.183.11-release-1 Adobe Flash Player 10.3
ii flashplugin-installer 11.1.102.55ubuntu0.10.04.1 Adobe Flash Player plugin installer
rc gnash-common 0.8.7-0ubuntu1 free SWF movie player - common files/librari
rc mozilla-plugin-gnash 0.8.7-0ubuntu1 free SWF movie player - Plugin for Mozilla a

*********************************************************************************************
apt-cache policy firefox;

firefox:
  Instalado: 3.6.24+build2+nobinonly-0ubuntu0.10.04.1
  Candidato: 3.6.24+build2+nobinonly-0ubuntu0.10.04.1
  Tabela de versão:
 *** 3.6.24+build2+nobinonly-0ubuntu0.10.04.1 0
        500 http://br.archive.ubuntu.com/ubuntu/ lucid-updates/main Packages
        500 http://security.ubuntu.com/ubuntu/ lucid-security/main Packages
        100 /var/lib/dpkg/status
     3.6.3+nobinonly-0ubuntu4 0
        500 http://br.archive.ubuntu.com/ubuntu/ lucid/main Packages

*********************************************************************************************
apt-cache policy chrom*

W: Impossível encontrar o pacote chrom*

*********************************************************************************************

My ubuntu is in portuguese, any translations needed, please ask me. On the last command, the answer was:
W: package chrom* not found.

sudo dpkg -P gnash-common mozilla-plugin-gnash

Have you tried updating to firefox 8?

Just did it, didn't work!

Maybe reinstall firefox?

sudo apt-get purge firefox;
sudo apt-get install firefox;

#Remember you will lose all firefox settings!