Firefox en Linux Ubuntu
Firefox en Linux Ubuntu
Firefox on Ubuntu
You appear to be using the Firefox package provided by Ubuntu Linux. Ubuntu distributed a new version of Firefox which contains the security fixes from Firefox 1.0.4, however, they did not update the version number, so we have no way to tell whether your copy of Firefox contains the security fixes or not. A request to Ubuntu to update the version number has been filed at Ubuntu Bug 10681. A workaround you can use to get access to addons.mozilla.org is given in comment 3 on that bug. Please ensure you have updated to the latest Firefox package using apt-get, Synaptic, or the Ubuntu Update Manager before trying the workaround.
Menudo fallo ;P