three nnmaildir questions: naming, numbering, and splitting

[David Wuertele <dave-gnus@bfnet.com>]

I am a new nnmaildir user.  Here is my relevant .gnus:

(setq gnus-secondary-select-methods
      '((nnmaildir ""
	 (directory "~/mail/maildirs")
	 (create-directory ".")
	 )
       (nntp "news.gmane.org")))

I have fetchmail deliver directly into the various maildirs in
~/mail/maildirs/*, and I'm seeing weird (wrong) unread article counts,
like this:

       425: nnmaildir:dave@example.com 

even if I have no unread mail in that group.  When I enter such a
group, the number quickly reverts to zero and the cursor just moves
down in the group buffer to the next group.  Ideas?

Second question: I would like to rename that group.  Since I have a
lot of nnmaildir: groups, I'd like to say 'j' to jump, then type
'dave@' and do completion.  But as it stands I have to type
'nnmaildir:dave@' then do completion.  Is there a way to make this
quicker?

Third question: I'm also wondering wondering what the best strategy
for splitting is.

1.  I want to continue to use nnmaildir as the select method

2.  I don't want to split into different maildirs (since they don't do
    crossposting elegantly).

Any suggestions?
Dave