10.10 - Can I install the current version of Unity in an older version of Ubuntu?

Is it possible to install current version of unity of 11.10 in 10.10 as I'm fed up with the power issues of current kernel version and would like to revert back.

If I revert back to previous kernel 2.6.38 on 11.10 can I solve the power issues and heating issues? And is it possible to install 2.6.38 on 11.10?