Hi Stephano,
Effectively, you have found a "bug" in that page.
Because regular menu was on one line, nobody has found this problem,
but with your layout on 2 lines, every little bit of space have it's place!
To correct your problem, go to folder
slides/lib, you will find a file
gallery.css.
Edit it in very top you will find that line:
line-height: 140%;Simply delete this line and your menu will be perfect!
Thanks to report this bug!
Jacques