Hey, I can't log in to my new mac mini any more! OSX Lion. It does have rEFIt installed, don't know if that is an issue. I get to the login screen, select my user, enter my password, and then the screen turns white for a second, then just returns to the login screen...! How to fix? Very Frustrating.... I just installed more ram, but i took that stick out and still can't login so i do not believe it is the ram... thanks, r.