Etch is almost 2 years old!SATA support began in the 2.5 kernels and some modules were backported to 2.4. There have been many huge changes in the 2.6 kernel to date, so Etch should be the one to use. Kernels 2.6.16 to 2.6.18 seem fine, 2.6.19 is buggy, never tried .20 - .21 is in the works.