Well, it turns out that Google CAN teach me anything. ;-) I've upped the memory limit the script was crashing into, but I hope that's temporary. I'm more interested in WHY it suddenly takes more than 8M to run editprofile.php - I have a feeling the code is too sloppy and we now have too many users in the database to get away with it. I SHOULD just delete the 200 lowest rated users, but I'll probably just optimize the code instead. :)