Either only one person is using MapServer on Panther, or only one is willing to say something (Sorry Jonathan, my email replies keep getting bounced with address not found.) Or only one person has upgraded to 4.10 - 4.8 is OK.
Anyways, MapServer should now work again on Panther. I had switched back to using the system CURL, which is incompatible between Tiger and Panther. I think that happened as a part of my GDAL framework simplification (it had a copy of CURL).