I get the new name Jill on and off when I log in. Sometimes it sees me as guest-ip address and sometimes as jilly. It still says jilly as my user name on my profile, or at least it did just a minute ago. This is not that big of a deal so don't knock yourself out trying to fix it :) I'll let you know if it's still messed up later on.
Getting somewhat the same thing as Jilly from time to time. I will show up like a guest and not a logged user.
Guest from ###.###.###.##
I find that if I close the current browser and open a new one, the problem is usually fixed. Sometimes I have to reconnect to fix the problem. Never had this problem before but for that last few days it has been happening at least once or twice a day.
Is it a cookie problem with IE or something on your end? I'm using IE 5.5.