The website I refer to with this problem is http://www.collegetribune.ie
I changed the theme yesterday and had no problems myself. However, so far 3 (and I've only spoken to 3 about it) have told me that they cannot see the main menubar or the post titles (headlines). In the former case, three of the latest posts from the (now invisible) still drop down when you hover over the menubar so they seem to be working fine but, sadly, simply not visible.
This issue existed with a previous theme too so my feeling at the moment is that it's a backend (admin of FTP) problem but not sure what. I've disabled all plugins to see if that would make a difference but it hasn't.
Also, the top (secondary) menubar it seems is visible.
Here's what menus should look like:
(ABOUT | WRITE FOR US menu does not seem to be effected, but NEWS / EDITORIAL menu is invisible)
And here's how the post titles/headlines should look:
The reality (for most people it seems)
All help is most definitely appreciated. Thank you :)