I just updated the install script for Mono 2.8.1. Better late than never. ;) This script will install mono, gtk, gdi, xsp and mod_mono for use with a web server.
wget --no-check-certificate https://github.com/nathanb/iws-snippets/raw/master/mono-install-scripts/ubuntu/install_mono-2.8.1.sh
wget --no-check-certificate https://github.com/nathanb/iws-snippets/raw/master/mono-install-scripts/fedora/install_mono-2.8.1.sh
chmod 755 install_mono-2.8.1.sh ./install_mono-2.8.1.sh
If you have previously installed Mono from source, you may want to uninstall it before deleting its source. Run sudo make uninstall from each component directory you previously installed.