Hi guys,
For your information, a few days ago I change the theme for my account from the default one to "Classic YaBB SE Theme" instead, but I then noticed that I only have these menu options at the top of the screen:

"Home" "Help" "Search" "Profile" "Logout"

So that meant I couldn't find the forums without doing a search, and I could never see the new posts, etc. either.

I have now changed back to the default which fixed these issues.

Maybe this will help someone too.

cheers,
Paul