Re: Snatching defeat from the jaws of victory...
"@KenHagan, Debian long ago deprecated the har-de-har-har package format, so you were installing FF the wrong way."
If you check the OP, it wasn't me trying to install it. However ... for the benefit of all the down-thumbers mocking the OP and my own reply, here's a transcript of what happened 30 seconds ago on my machine running a fully patched Debian Stable:
me@ACER:~$ sudo apt-get install firefox
[sudo] password for sudo-root:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package firefox is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'firefox' has no installation candidate
me@ACER:~$
You see, when I made my "Probably Debian" remark, I knew about Iceweasel and I assumed that most of the Linux fans on El Reg forums would be aware of it too. Since quite a few clearly aren't, let me spell it out for them: Installing firefox on Debian is blocked by default.