I'm on reseller, pass 66 and have had this problem on all my wp blogs today. I've put a php.ini of "memory_limit=64M" onto the same folder of the WordPress install so now the blogs work. But I can't get onto wp-admin and one of my pages that uses the fGallery plugin doesn't work
http://robcubbon.com/photos/album/snaps/
I'll try putting this php.ini into various folders and let you know how I get on.
Cheers.