Main Sourceforge Project Page http://bluesmoke.sourceforge.net/
EDAC Wiki http://buttersideup.com/edacwiki/
EDAC Bugzilla http://edacbugs.buttersideup.com/
Wikipedia ECC/EDAC overview (not Linux-specific) http://en.wikipedia.org/wiki/Error_correction_and_detection
Original Linux ECC project http://www.anime.net/~goemon/linux-ecc/
Wiki Article on soft errors http://buttersideup.com/edacwiki/SoftErrors
