RHEL3 U5 nis or automount problem

[taroon-list redhat com]

Hello taroon-list,
  Set up nis auth
  1. What I do:
  #[root comp root]#cat ~a<Tab><Tab>           #Where "~a" is a some
  number of nis users
  2. What I see, when I try do that:
  do_ypcall: clnt_call: RPC: Timed out      #console "sleep" at this
  moment
  and great, GREAT timeout...
  Sometimes even
  #[root comp root]#ps -ef|grep yp
  have timeout

  Whith RHEL3 U4 all right whith equal config... was :-(((
  Any suggestions?

-- 
Best regards,
 Alexander

P.S. Sorry for my bad english.