The directories contain kernel images of two flavours:

    fedora_patched: contains kernel version 2.6.16 RPM packages (i686 binary
		    and source) with fedora 5 patches
    vanilla: contains a vanilla kernel version 2.6.16.9 RPM packages (i386 binary and source)

NOTE: If you have a newer kernel than provided in either directory, you
need to use the --force option with rpm.