We had started the over haul of the Mylex Raid card driver, which back in the SuSE 6.2 days had to be compiled into the kernel if you wanted YAST to work.
By the time we were into our 6th or 7th build, having hacked on the device driver for 2 weeks- Freshmeat annouces a new driver. A RedHat -rpm. (Dandelion comes through)
Download the RedHat iso's and we are on our way.
This seems to be the hackers problem. The production kernel is announced, within 8 months the source is updated 18 - 19 times. This time out (the 2.4 kernel) the Grub loader had problems with the Mylex controller, no one here even thought that hacking the driver was a good idea. Use lilo and wait, it will get fixed (It was)

We play with the odd numbered kernels to get a feel for what is coming and tweaking is always fun BUT unless you do nothing else the new kernels just come to quickly.