Hi Guys, went through the process of a phone call and although a long wait it turns out that it is actually my machine that i am on right now that will not let me login to My Gov and now I find there are a couple of other sites that are doing the same thing.
I can use my Lappy and other Desktop and even my wife's phone and i can access Centerlink with my own phone.
So it appears that there is something not quite right on my machine, so after doing all the stuff that you guys suggested I am not sure where to go with this.
I suppose it is not a big issue as i can still access My Gov when i need to, not that i have to very often, I just wanted to be able if i needed to on this Desktop.
Thanks for your assistance and suggestions.
Leon