GUI didn't start 3 days ago

[NYINYI]

  hi all,

  I'm using RH 9's NAT DHCP both of GUI and Command line .In 3 days ago , I 
login with normal user and I faced some error like that GUI mode can't start 
and show me login message again.I login again and found same error. Login 
with root and can use all day. The next day , I can't login both of normal 
user and root whatever i try . I can see all startup ok .I can't get only GUI 
login. How ? Linux server trying to start UGI again and again after I open 
this server. Need to overwirte update. ? Copy all my data with SSH connection 
form xp or w2k ? This is my idea. Let me know urs .

   
  Thanks in advance
  
  NYINYI
  Technical Engineer
  MMG Technologies