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).