I developed a social networking blog in wordpres mu and buddypress in Sept 2009 and working fine till 10th Oct 2009 and on this date i tried to login with my admin user name and password.The screen show nothing and i entered wrong user then it shows invalide user name and password. But when i entered correct user name and password then nothing is getting me. I also tried to open dashboard, but i can't , its not opening with this url(www.tibetbuddy.com/wp-admin).
So do you know what happened to my site? Help me please.