One other big problem (in my book) is RH's lack of support for ReiserFS. Even though this is officially in the kernel they insist it is unstable.
Well I can say that I am running it on all my boxes and some are getting 40-50,000 hits/day and yesterday my init went crazy and process 1 died (never seen that before). I did a cold boot and reiser came right up. No hassle, no Oracle complaints, no problems.
That said the 2.4.x kernels still have bugs in the VM (volume mangager) and other FS related things.(I am running 2.2.x kernels in production)
DO NOT RUN A 2.4.x KERNEL IN PRODUCTION YET. The 2.4.4-pre kernel fixed another set of bugs in the VFS layer that could cause corruptions, and knfsd is still a problem (but for those who insist on nfs, this will eventually be great as it supports v3 of NFS).
