Note to the original poster: when you report a bug with a patched
kernel always mention it.

I have mentioned earlier and Bart knows it.

I use 2.4.28
+ ebtables-brnf-8_vs_2.4.28.diff
+ U32 patch from patch-o-matic-ng-20040621.tar.bz2
+ patch for br_netfilter.c made by Bart to find out why kernel panic happens(it was a few
  letters ago)
  All patches has applies cleanly.
  U32 doesn't affect on br_netfilter.c

[root@linux kernel]# md5sum linux-2.4.28.tar.bz2
ac7735000d185bc7778c08288760a8a3  linux-2.4.28.tar.bz2
(taken from http://www.ru.kernel.org/pub/linux/kernel/v2.4/linux-2.4.28.tar.bz2)

[root@linux bridge]# md5sum ebtables-brnf-8_vs_2.4.28.diff.gz
30542b1a7a502593afb4d37055ec5e35  ebtables-brnf-8_vs_2.4.28.diff.gz

[root@linux iptables]# md5sum patch-o-matic-ng-20040621.tar.bz2
4fd3c744bf55f119fef6c7c3c4acc4b6  patch-o-matic-ng-20040621.tar.bz2

If the problem will continue appear and will not be solved an any
way, of course, I will use 2.6 kernel, now I am not ready to use it.

Pasha