Did you use the latest ISO ..... 2010.12 ?
Can you post the menu.lst entry for that boot option (KDE)?
Not too sure about the ISO but it was pclinuxos-kde-2010.iso. I suspect it is the first 2010.
Menu.1st is
timeout 10
color black/cyan yellow/cyan
gfxmenu (hd0,0)/boot/gfxmenu
default 0
title KDE
kernel (hd0,0)/KDE_0/vmlinuz livecd=KDE_0 fromusb root=UUID=84a5508c-2a93-4171-b552-362a65c548e8 acpi=on vga=791 splash=silent
initrd (hd0,0)/KDE_0/initrd.gz
title KDE with Persistence
kernel (hd0,0)/KDE_0/vmlinuz livecd=KDE_0 fromusb root=UUID=84a5508c-2a93-4171-b552-362a65c548e8 acpi=on fstab=rw,noauto vga=791 changes_dev=UUID=84a5508c-2a93-4171-b552-362a65c548e8 splash=silent
initrd (hd0,0)/KDE_0/initrd.gz
title KDE with Copy to RAM
kernel (hd0,0)/KDE_0/vmlinuz livecd=KDE_0 fromusb copy2ram root=UUID=84a5508c-2a93-4171-b552-362a65c548e8 acpi=on vga=791 splash=silent
initrd (hd0,0)/KDE_0/initrd.gz