Yesterday I did the build of Emacs trunk rev.102296 on a a Fedora 14 
GNU/Linux system (at work). Configure says:

[...]
Configured for `x86_64-unknown-linux-gnu'.

   Where should the build process find the source code? 
/home/graziosi/work/emacs
   What operating system and machine description files should Emacs use?
         `s/gnu-linux.h' and `m/amdx86-64.h'
   What compiler should emacs be built with?               gcc -g -O2
   Should Emacs use the GNU version of malloc?             yes
       (Using Doug Lea's new malloc from the GNU C Library.)
   Should Emacs use a relocating allocator for buffers?    no
   Should Emacs use mmap(2) for buffer allocation?         no
   What window system should Emacs use?                    x11
   What toolkit should Emacs use?                          GTK
   Where do we find X Windows header files?                Standard dirs
   Where do we find X Windows libraries?                   Standard dirs
   Does Emacs use -lXaw3d?                                 no
   Does Emacs use -lXpm?                                   yes
   Does Emacs use -ljpeg?                                  yes
   Does Emacs use -ltiff?                                  yes
   Does Emacs use a gif library?                           yes -lgif
   Does Emacs use -lpng?                                   yes
   Does Emacs use -lrsvg-2?                                yes
   Does Emacs use imagemagick?                             yes
   Does Emacs use -lgpm?                                   yes
   Does Emacs use -ldbus?                                  yes
   Does Emacs use -lgconf?                                 yes
   Does Emacs use -lselinux?                               yes
   Does Emacs use -lgnutls?                                yes
   Does Emacs use -lxml2?                                  yes
   Does Emacs use -lfreetype?                              yes
   Does Emacs use -lm17n-flt?                              yes
   Does Emacs use -lotf?                                   yes
   Does Emacs use -lxft?                                   yes
   Does Emacs use toolkit scroll bars?                     yes
[...]

and 'About Emacs' menu says that it is a Gtk+ 2.22.0 build. All seems to 
works fine but I notice that the tool bar shows up each icon with, on 
the right, its name. This causes a long tool bar, so that many icons are 
collapsed. I have attached a screen shot.

Any idea because this occurs? ...and workaround?

Thanks,
Angelo.