After upgrading from 12.04 to 12.10 I'm facing two issues. First is that the Virtual Machine Manager is looking for the libvirt socket in /run/user/<USER>/libvirt/libvirt-sock instead of /var/run/libvirt/libvirt-sock

As a quick work-around, I make a symlink to the socket and can now connect to 'localhost ( QEMU Usermode)

However, my previously defined machines are gone! The images are on the disk, but they are not listed.

Where were these configs saved in 12.04?