RPM packages for Kamailio v4.0.0 are available now for several Linux distributions: Centos 5.5 and 6, RedHat 5 and 6, Fedora 16, 17 and 18, OpenSuse 12.1, 12.2 and 12.3.
You can find download links at:
The Debian packages for several distributions, including Ubuntu, should become available soon on project’s APT repository. Meanwhile, packages for Debian Squeeze are available at: