Luciano, thank you. Yes, I DO have warnings turned off (because 5.3 SPEWS them into the logs). I've already hired Photopost to do the install, so I'm going to let them go through with that, in part because I've already spent 18 hours this weekend, and I have to make my family (and my job) feel like I notice they are there
I deeply regret going from FC10 to FC12 (should have stopped at FC11). I was ignorant of how radically PHP5.3 had changed things for our previously reliable scripts. If I had it to do over (and I may this still redo the server this summer) I would have gone with CENTOS 5.