It's looking pretty good so far...
Lars, I pulled down the 4.6 cvs tip and I'm running it now. I did a db drop and completely reinstalled from scratch. When I looked at the rel_segments table after creating a new subsite and my new segments, I noticed that there is no "Main Site Administrators" segment. Newly created subsites do have this segment. I'm wondering if, when you added the segment code to acs-subsite, you might have missed the fact that the main subsite has to be retrofitted since it goes through a "promotion" to become a real subsite after initial installation. Just a thought...
Randy