why am I getting other websites when I click on mumsnet in my drop down bar?

[Meglet]

If I click on mumsnet in my drop down bar or type in mumsnet.com it takes me to a different website (Go Daddy, something to do with domain names?). To access MN I need to go back through my old MN browsing history and select any old thread.

I have Norton anti-virus, pop-up blocker is on and I never click or visit anywhere dodgy. It's only happening on mumsnet too .

update it's sorted. Turns out I'm not very good at typing the correct address .