I just booted into 2.6.9-rc1.  Dmesg is flooded with this.  Not only 
that, but it stalls the machine until I come back to the keyboard.  Thus 
any network connections timeout.

ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
Hangcheck: hangcheck value past margin!
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked
ASSERT net/ipv4/netfilter/ip_nat_helper.c:428 &ip_nat_lock writelocked