Surprised vendors push the most popular distros (and Larry's)?
As regards Ubuntu support, I can't say I'm surprised. RHEL, SLES and OEL seem pretty locked down and in-tune with the vendors, whereas Ubuntu seems a bit more bleeding-edge. I'm not bashing Ubuntu, it's not a distro I use professionally so my comments are very much as an observer rather than a convert, I just value RHEL's stability. And it is obvious why OEL gets better billing than Ubuntu - hp wants to be on best terms with Larry, so Oracle's Linux will always get preferential treatment. Besides, underneath OEL is largely RHEL with some minor tweaks, so it probably isn't that hard to validate if they have already covered RHEL.