After the upgrade to Fedora 17, I have discovered that gtkpod would crash on adding folders.
The workaround is quite simple.
sudo yum -y remove gtkpod
Search google or rpmbone.net for “gtkpod-1.0.0-2.fc14.x86_64.rpm” and download it.
sudo yum install libgpod
sudo yum localinstall gtkpod-1.0.0-2.fc14.x86_64.rpm
Launch gtkpod and see that all is working quite well.