I got a nasty-gram from DynDNS saying one of my boxes was "abusing" the 
service.  I have 15 m0n0wall boxes currently using DynDNS, and none have 
been a problem so far. (About 4 months)  From the tech support, "The problem 
is that you are running ez-update, an update client, and it is sending 
abusive updates.  You need to either fix the update client or use a 
different update client instead as currently it is sending an update every 
15 minutes, which is not allowed."  Has anyone seen this before?

                                Lee