Installed a fresh new installation of 2008 server on a new machine.It migrated all the users,Dns zones and pointers,DHCp.
during installation the global catalogue was checked on 2008 as well.
later i moved on the FSMO roles to the new server and installed the DNS server role also and made it secondary DNS.
now i have all authentication issues all the servers are down.
I demoted the new 2008 server and just have 2003 server as the global catalogue server. Still the problem persists.