I'm assuming that because of changes between 1.5.2 and 1.5.4 that the 
1.5.2 userland stuff for ipf and ipnat are not compatible with the 
1.5.4 kernel.

Can someone let me know if this is true or not?  The system comes up 
just fine w/the new kernel, but I didn't want to build world if there 
was something else going on (and I was hoping not to have the system 
cut off from the world because the firewall was down while the build 
was going on).

-Sean