[Exim] New worm out. Info:

http://www.datafellows.com/v-descs/welyah.shtml

quote from Slashdot:
a new worm that will no doubt be cluttering our inboxes soon. Clever bits
include running its own SMTP service to increase chance of success, as
well as using a bunch of spaces to disguise the true extension of the
executable. No doubt countless copycats will soon follow and our inboxes
will be cluttered by countless copies of the thing. Not that there's a
problem with windows security.