Is RHEL 6 ready for production?

[Yasha Karant]

We are obtaining a new GPU cluster research compute engine, Nvidia CUDA 
4 conforming.  Because of the way the funding agency evaluates 
proposals, we effectively had to use an integrator who is well respected 
in the community associated with the particular funding source.

Speaking with the professional staff at the integrator, it appears that 
the consensus is that RHEL 6 is not really ready for production, and 
that production engines are being kept on RHEL 5.6 (CentOS 5.6, SL 5.6). 
 When I enquired about SUSE Enterprise current, I received similar 
comments from the same source.  It was noted that RHEL 6 was withdrawn 
for a while after production release.  Does anyone reading this list 
have any observations on the production stability of RHEL 6?

This question is irrespective of new hardware support in RHEL 6 that may 
not be operational (e.g., USB 3, nominally in RHEL 6.1).

Yasha Karant