I have been having similar problems. I turn my computer 'off' nearly every time I leave it (and always, over night); intermittently, over the past week or so, I have been 'greeted' as a 'Guest' on the LB Forum when I first turn it on for the day, and have to log in. This AM, it kept telling me I hadn't entered a user name (when I had; the correct one!), then asked for a password(when it was already in place, and correct!) While I was trying to correct this, at one point, it displayed 'Minimor' for the user name, all by itself?????
I have changed NOTHING on my computer settings in awhile, and don't intend to set the security at a 'lower' setting.
Anyone have any tips? I have Internet Explorer and Windows XP, if that's pertinent...
Margo