Quoting Daniel Veillard <veillard(a)redhat.com>:
A lot of things accumulated since last month, especially bug
fixes,
so it was time for a new release, available at
ftp://libvirt.org/libvirt/ [...]
Ubuntu packages for Gutsy are available from my PPA:
https://launchpad.net/~pgquiles/+archive
--
Pau Garcia i Quiles
http://www.elpauer.org
(Due to my workload, I may need 10 days to answer)