Difference between 710 RC1 and 710 RC2
When we shipped RC1 it happened to coincide with an Ubuntu release, this lead us to discover that we were missing a few debs in our deb cache. During testing and on any ordinary day these are just downloaded during the install; but when ubuntu's servers were under very heavy load, these downloads took a while to complete. If you already installed RC1 these packages were automatically downloaded during the install so you don't need the RC2 disc.
There are also minor changes in the ZWave Driver which is currently under active development. If you need these, can get these by simply installing the appropriate debian package:
wget http://linuxmce.org/710rc1_update/pluto-zwave-lighting_18.104.22.168.0804202200_i386.deb sudo dpkg -i pluto-zwave-lighting_22.214.171.124.0804202200_i386.deb
wget http://linuxmce.org/710rc1_update/pluto-zwave-lighting_126.96.36.199.0804202200_amd64.deb sudo dpkg -i pluto-zwave-lighting_188.8.131.52.0804202200_amd64.deb