Gnus mail splitting headaches

[Dan Anderson]

        I am using Emacs 21.3.50 built from CVS.

        I just migrated to Gnus -- for mail and news -- and I love it.
However, I just realized today that my mail splitting has been sending
50%  of my e-mail  to mail.junk  (for seemingly  no reason).   This is
legitimate e-mail,  and if it weren't  a holiday and  I weren't having
fetchmail save all  e-mails on the server and  then double checking it
with Evolution I would really be in a stew.

        Below is my .gnus for mail splitting:

,----[ mail splitting rules in my .gnus ]-----------------------------------
|
| (setq nnmail-split-methods 
|   '(
|   ;; for all the mailing lists I subscribe to I'll have an entry like this:
|   ("mail.mysql_listserv" "^To:.*mysql@lists.mysql.com.*")
|   ("mail.mysql_listserv" "^Cc:.*mysql@lists.mysql.com.*")
|   ("mail.mysql_listserv" "^Bcc:.*mysql@lists.mysql.com.*")
|      ;; send junk email to /dev/null
|   ("mail.junk" "^To:.*vim@vim.org.*")
|   ("mail.junk" "^From:.*@yahoo-inc.com.*")
|      ;; these last lines are supposed to be a catch all for
|      ;; any e-mails addressed to me so they don't go to mail.junk
|      ;; I used to have an entry like:
|      ;; ("mail.unfiltered" "")
|      ;; but it still didn't work
|   ("mail.unfiltered" "^To:.*dan@mathjunkies.com.*")
|   ("mail.unfiltered" "^Cc:.*dan@mathjunkies.com.*")
|   ("mail.unfiltered" "^Bcc:.*dan@mathjunkies.com.*")
|   ))
`----------------------------------------------------------------------------

        What  am I  doing wrong?   It's really  weird.   Virus e-mails
(like the  "Security Update  From Microsoft") have  a tendency  to get
through, but seemingly  random e-mails will get dropped  to junk.  For
instance, the mySQL listserv will have 25% of its e-mails sent to junk
and the  rest correctly  put in the  mysql_listserv.  What am  I doing
wrong?

Thanks for your help,

Dan