kernel 2.6.11-rc2 trouble

[Jim Woodward <jimwoodward1937@adelphia.net>]

I have 2 computers running linux sarge 2.6.10 ( one uses a Via cpu and 
the other an Intel cpu) and both have the following trouble when trying 
to complile the new kernel:

  LD      net/ipv4/netfilter/built-in.o
net/ipv4/netfilter/ip_nat_tftp.o(.bss+0x0): multiple definition of
p_nat_tftp_ hook'
net/ipv4/netfilter/ip_conntrack_tftp.o(.bss+0x0): first defined here
make[5]: *** [net/ipv4/netfilter/built-in.o] Error 1
make[4]: *** [net/ipv4/netfilter] Error 2

I would consider myself an experienced newbie and would be very 
appreciative of any suggestions on what I'm doing wrong.
Thanks!