I just went through a very successful upgrade from an EA1 Apache 1.3 install to EA3 Apache 2.2. The only problem I'm having is that UseCanonicalName is set to off by default. It appears that this setting is stored per-user in the new userdata system, but I can't figure out the proper way to change this (for all current and future users). I could modify it for all existing users, but any new users will get the wrong value. I ended up working around the problem by using a custom vhost template which ignores the user's usecanonicalname value, but this is a hack. I'm curious where and why cPanel is configuring the usecanonicalname value for each domain. Any insight? Thanks!