This has been discussed before.  There is a description in The Breastfeeding
Atlas of this phenom. and a picture.  It isn't uncommon.  In fact, in dairy
herds, clumping in the milk is one of the things that alerts the dairyman or
woman to the fact the cow has mastitis.  It is essentially debris, and perhaps a
by-product of increased lipolysis.

Barbara Wilson-Clay, BSEd, IBCLC
Austin Lactation Associates, Austin, Texas
[log in to unmask]
http://www.jump.net/~bwc/lactnews.html

             ***********************************************
The LACTNET mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software together with L-Soft's LSMTP(TM)
mailer for lightning fast mail delivery. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html