How do i get flash working with Mozilla?

I downloaded the linux_flash.tar.gz (unpacked it) and installed the two files into /usr/lib/mozilla/plugin.

when I look at aboutlugins i can see it in there and it says enabled =yes.

But it's not working??

I also copied the files into /usr/lib/mozilla-1.0.1/plugins/ just in case but that didnt work either.

Any ideas appreciated