Ok, I had the time to make more tests an found out, that upgrade to ISOLINUX 3.08 3.08-pre8 would fix the "boot:"-prompt problem on dell c600 latitude! If anybody find out the same, also at oher platforms, let is know us! You could get the latest version from: http://syslinux.zytor.com/ this would take you to: http://www.kernel.org/pub/linux/utils/boot/syslinux/ look into the folder "Testing". Ups, pre-10 is out, ok I test it also this night or next day with the dell and write down the result here!