ip_conntrack_lock not readlocked

[Albrecht Melan]

Hi,

 I'm using a kernel of version 2.4.18 where module-support is disabled
together with iptables-1.2.6a ( all compiled by myself).
 I applied patches to netfilter  using POM.
 The following messages are seen in  my log-file
        ASSERT: ip_nat_core.c: 743 &ip_conntrack_lock not readlocked
        ASSERT:ip_conntrack_core.c: 973 &ip_conntrack_lock readlocked

  Has anybody an idea why this happens ?

 Thanks for your help
     Albrecht