gutsy

[This method also works for Kubuntu 8.04 64 bit and Flock 1.1 - see the update at the end of this post]

This turned out to be easier than I thought! First you need to get the deb file from getdeb.net and install it manually it manually:
sudo dpkg -i flock_1.0-5~getdeb1_amd64.deb

Wow! From the look of this thing you would be forgiven for thinking the Kubuntu team have spent six months spitting and polishing this fine operating system to make it a really smooth user experience. I have just installed the 64bit version onto my aging Acer laptop and it has taken remarkably little time to get everything up and running.