Gnus can't open nntp+news.gmane.org

[Pál <csanyipal@gmail.com>]

Hi,

I used so far GNU Emacs 23.4.1 (x86_64-pc-linux-gnu, GTK+ Version 2.24.10)
 of 2012-03-21 on trouble, modified by Debian and in it GNUS to read and post
news.gmane.org.

Today I can't opne news.gmane.org with Gnus, I get an error mesage: 

Unable to open server nntp+news.gmane.org, go offline? (y or n) 
400 load at 40.63, try later 
nntp (news.gmane.org) open error: '400 load at 40.63, try later '.  Continue? (y
or n) 
Couldn't open server on news.gmane.org

I didn't changed any settings neither in .emacs, nor in .gnus.

What can I do to solve this problem?

Regards, from Pál