cannot get all of mail from local file

[ssSslang <sssslang@163.com>]

Hi, I use No Gnun v0.6 to read my mails fetched to a local file by
fetchmail program. After I changed to another system(I re-installed the
software, but use my old config), I got a strange problem.

I configed gnus load the mails from local disk when it starts. But If I
start it for the first time, I mean the gnus needs to load some .el file
from disk, it cannot load all my mails(I had a system monitor which told
me the right number of new mail), while the *Messages* buffer shows that
"nnml: Reading incoming mail (xx new)...done", and this is the right
number.

Then I had two options, one is press 'g' on group buffer, gnus tells me
there's no new message. The not-shown messages had gone. The other is
hit 'q' there, and then restart gnus, I can have all my new messages
shown in the groups.

I don't how to make it correct, or to debug. could someone give me a
clue? Thanks.

-- 
ssSslang