4.0.1 RC3 VS 4.0.0.1: better performance and/or stability?

Hello,

I am running 4.0.0.1 now and not so happy about its response performance (same as 4.0.0.0) in the 3-node clustering env (RHEL 5.8 X64). The 4.0.1 has strong focus on clustering and thus I am wondering if 4.0.1 RC3 (latest available one) has better performance in clustering compared with 4.0.0.0/4.0.0.1? If so, it will be definitely worth trying, at least, for me:-)

Please advise or share your experience with 4.0.1, especially RC2 or RC3.

Thanks and Regards

Frank