> When I wrote "replacement", I didn't mean that all sysv scripts must be replaced. Postfix sysv script works fine with upstart, doesn't it?

I'm honestly not sure if you are making fun of upstart or if you're trying to say that having to keep a sysv compatibility mode around because upstart is not able to handle an extremely common daemon is somehow acceptable.

Sure, if you consider it "fine" that upstart is too broken to reliably run a reasonably standard and fairly important daemon in native mode.