The symptom is the same I've been fixing with this document -> http://www.symantec.com/security_response/writeup.jsp?docid=2009-031816-5114-99&tabid=3
Some don't read the document before replying and say they can't do this. Please skip down to the most important step 5.
Bob
i am having trouble logging into my computer. i get the login in screen and, click on my account <admin> and get loading settings, saving settings. then it just sits in the login screen please. help. i have important docs. i need to gain access to. thanks