Exactly, that's also why I think Ubuntu LTS is the way to go.
- centos 6: we love centos 6. we use it a lot at Amahi for our services. however, there are too many little details changed, many not up to date, that it's far from trivial to run amahi on it. especially as we move forward.
- ubuntu 12.04 lts: this seems to be the best bet at the moment for our next stable release. we have been working on it for a while, we have a beta 1 working and apps are starting to work. it's LTS, so it looks to be stable for a while, so it's a good stable platform. many people like ubuntu/debian too.
Imho, you guys don't have the manpower to focus on several distributions at the moment. Furthermore, Fedora's short life cycle is already too much for the team to handle (look, now with Fedora 14 we are running and End of line OS that isn't getting any security fixes anymore for 4 months already. This should not happen again in the future, and the way to avoid this is to move away from Fedora).the best approach seems to launch a more or less stable beta-quality release on U12.04 and then immediately focus on porting the platform to rails 3, ruby 1.9 and fedora 17 services.
ordinarily, we like to fight one dragon at a time, not all three at the same time!
As you said, the best choice is between Ubuntu LTs and Centos. And Ubuntu wins for the above reason.
So the best imho is to move to Ubuntu LTS and make this the main distribution (for it's solid supported base + long term life cycle).
Many thanks to all of you.