That pretty much sums it up...

http://www.mriaq.asn.au

I've been working at this for an hour now.

For the last few weeks, this site has been running really smooth in terms of navigation etc.

Suddenly, I have a 'Members Area' page showing up in the main nav on the home page that never used to show up before. I've checked every child page underneath it - everything is set so that guests can't view it - but it is still showing up to guests.

ALSO - something really strange, after I logout, the MegaMenu is still showing the 'Log out' option in the bar. But get this, when you go to another page, like "About Us" the logout option disappears and is replaced with 'Login' again...

I've tried clearing the cache, any other ideas?

Everything and anything is seeming to play up with my sites that are running on 5.6 compared to 5.5.