Not able to connect to ssh server with putty client

Hi,
I am not able to connect to the ssh server with the putty client . I have generated the keys and copied it over to the server side .. I am however able to connect with ssh client from sun and linux boxes .. When I connect , the terminal is popped up which asks for the user name ( Shows it as login as ). When the password is typed , it closes the window.
I have attached the log file .. Please help me resolve the problem.

Jerome