i downloaded force plugin( free developer edition) for eclipse 3.3.2. I am having issue connecting to the saleforce when i am trying to create a new project.

 the error is 

 invalid login crediantials:invalid usename,password,security token;user locked out.

I have changed my password ,reseted my security token multiple times. My proxy setting  are to connect directly to internet and there is no personal firewall running on my machine.

Please let me know what can be the issue.

thank you