gnus does not show killed or zombie groups

[vvv@vvv.vsu.ru]

Hi,

i reinstalled emacs and gnus from scratch and cleaned my home dir,
so that everything gnus-relared except my .emacs was absent.

i have the following gnus-select-method setting: (nntp "localhost").

Then i tried to subscribe to my local news server's groups.
But wgen i started gnus, it did not find/show any new newsgroups
on this server (i pressed `A z' and `A k' in a group buffer, but
it showed nothing). But the newsgroups were there! If i try to
subscribe manually to a newsgroup (`U'), then gnus does not show
the nntp backend, nor it shows possible newsgroups (when
completing an empty string). But if i, say, enter a newsgroup
like nntp:some.newsgroup, then gnus subscribes to it.

i was able to subscribe to the newsgroups by entering the server
buffer, and pressing enter on nntp:localhost server. But why
`A z' and `A k' do not work (and gnus does not find new
newsgroups)?

	Best regards, -- Vladimir.
-- 
Although the moon is smaller than the earth, it is farther away.