[zdw]

Basically, it's a more-current version of the Linux kernel added to their distro (which is a clone of RHEL5).

Surprise surprise... the newer kernel has more performance optimizations and is somewhat faster/featureful.

There are a few new features - see here for more on one of the data integrity ones:

http://www.c0t0d0s0.org/archives/6919-About-this-data-integr...

[nailer]

Yep. And RHEL MRG already includes a 2.6.32 kernel on top of regular RHEL 5. This probably even uses the same .config file.