Q:

Why is there no +mac download for 32 bit systems or for GNOME?

When I was first toying with 64 bit Ubuntu I was led to try the +mac version of the installer and that solved some problems for me.
Now however, I

want to use GNOME; and
want the 32bit version.

Even for the standard Ubuntu, I couldn't find a +mac installer for 32 bit systems. For the GNOME flavour I couldn't find any +mac versions at all.
I've got a terribly slow internet connection so I want to avoid unnecessarily downloading many different Ubuntus to try and find out.
Do they not exist because they're not required anymore? If they do exist, where can I find them?

A:

The +mac installers are for 64-bit only, since they deal with a problem with UEFI (only 64-bit supports UEFI now). So, there is no separate image for 32-bit. They still exist for 64-bit systems, and be located at an appropriate folder in http://cdimages.ubuntu.com, depending on the flavour. Right now, it seems only Lubuntu and the main Ubuntu images have them. This might because the only older Macs need it, and only these two flavours target them.
What is different about the Mac ISO image?

