cannot access cvs

Hi, it seems I can't access the cvs. It has been happening for a few days, roughly since the F-10 branching. Any ideas what is wrong here? [jsikorski@snowball common]$ cvs -z4 update -dPA ssh_exchange_identification: Connection closed by remote host cvs [update aborted]: end of file from server (consult above messages if any) [jsikorski@snowball common]$ Julian