OSDev.org

I tried updating my firefox using yum on my Fedora 5 but it didn't work. It just re-installed it but even worse...it seems to have deleted something called PSM! Never heard of such thing so I go online with opera (which is very unstable on my computer - keyboard doesn't work time to time) and looked up PSM and found out what it was. SO! I search how to get it but to my surprise I found complaints form other people saying that they couldn't get PSM. So now I can't visit https sites and I'm not liking it too much...
Does anyone know how to get this Personal Security Manager? Or where I could get more info on downloading it and installing it?

Thanks,
Kenneth