My fan expansion, Cult of the Golden Scarab, is finished (well, very nearly, anyway). You can download a .torrent file from either of these places:
http://www.demonoid.com/files/details/1857048/8653360/
http://thepiratebay.org/torrent/4816694/Arkham_Horror_-_Cult_of_the_Golden_Scarab
This expansion is a sequel to Curse of the Dark Pharaoh and is filled with eye-popping Egyptian evilness. It includes 8 Investigators, 6 Ancient Ones, 1 Herald and 1 Guardian, 32 Common Items, 32 Exhibit Items, 32 Spells, 16 Unique items, 16 Skills, 16 Allies, 36 Arkham Encounters, 24 Other World Encounters, 22 Mythos cards, 33 Monsters and a few other special cards. This torrent file includes all the .eons and in most cases you'll need to export the images. If you do torrent the expansion (or any part of it) please, please let it seed, because right now I'm pretty much the only seed, and the torrent needs all the help it can get.
This is a 'work in progress' and I'm relying on you guys to playtest it. There may be problems with the rules and/or any of the cards themselves. Please let me know if you have any thoughts or find any problems. The rulebooks are available as .doc files from the website in my sig.