Have you tried to install Maya 2012 using rpm?
read page 15.
Maya 2012 does not explicitly require RHEL 5.5 or Fedora 14:
"Maya 2012 is also capable of running on other configurations such as boutique distributions of Linux. However, enumerating systems that are not tested and cannot be supported or that fall below the requirements for a productive user experience is beyond the scope of the online qualification charts."
I've successfully installed and I'm running Maya 2012 Hotfix 4 on Slackware64 13.37, but I've not tested it with GNOME, only Fluxbox 1.3.1 and Xfce 4.6.2. Maya is built on RHEL 5.1 according to the documentation and it depends on old versions of libssl.so.6 and libcrypto.so.6. Fedora 15 probably ships with newer versions of these libraries so you need to create symlinks in /usr/autodesk/maya2012-x64/lib or copy the libraries from /usr/autodesk/maya2012-x64/support/openssl.