For this response I will refer back to the latest documentation for Linux.
https://supportimg.pgp.com/guides/pgpwdeLinux_101_ug_en.pdf
Ubuntu 10.10 is not listed as being a supported version in the manuall. I suspect it should work, but if something goes wrong, we will not be able to support it.
For dual booting, these KB articles may be helpful:
https://pgp.custhelp.com/app/answers/detail/a_id/679/kw/%2Bdual%20%2Bboot
https://pgp.custhelp.com/app/answers/detail/a_id/1342/kw/%2Bdual%20%2Bboot
https://pgp.custhelp.com/app/answers/detail/a_id/2191/kw/%2Bdual%20%2Bboot
Again, I suspect it would work, but should be done on a test system first and cannot be supported if something goes wrong. I also suspect that there will be improvements to this in future releases of Desktop for Linux.