Help setting up gnus with gmail

[gnus newbie]

Hi, All,

I am trying to setup gnus with gmail. Now I can login successfully,
but no mail folder in my gmail account are listed in the *Group*
folder. Did I missed something obvious?

Thank you for your help in advance.


Here is my setup(copied from emacs wiki page):

(setq gnus-secondary-select-methods
      '((nnimap "gmail"
                (nnimap-address "imap.gmail.com")
                (nnimap-server-port 993)
                (nnimap-stream ssl))))

Here is the what's in the *imap-log* buffer:

depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc/
CN=imap.gmail.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc/
CN=imap.gmail.com
verify error:num=27:certificate not trusted
verify return:1
depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc/
CN=imap.gmail.com
verify error:num=21:unable to verify the first certificate
verify return:1
* OK Gimap ready for requests from 204.111.250.141 c37if3702825ana.29

1 NOOP

1 OK Nothing Accomplished. c37if3702825ana.29

2 CAPABILITY

* CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA XLIST CHILDREN
XYZZY

2 OK Thats all she wrote! c37if3702825ana.29

3 LOGIN "xxxxxx" "xxxxxx"

3 OK xxxx@gmail.com authenticated (Success)