32-bit theoretically performs better on Xen. Debian is just more stable than Ubuntu, hence the preference.
On 9/25/13 4:38 PM, "Darren Shepherd" <darren.s.sheph...@gmail.com> wrote: >Is there any technical reason why we couldn't use ubuntu LTS (12.04 >and soon to be 14.04) for the system VM. Additionally is there any >technical reason we couldn't switch to 64bit. I don't necesarily want >to get into "fight for you favorite distro" discussion, just curious. > >Darren