I still haven't heard what these boxes are, but I entered my user name & password in one then found a hidden .dat file in my downloads folder. It was named 'SThumb' and I know I didn't download it and its not a legitimate Limewire .dat file. I've jumped to the conclusion its a keystroke monitor, if anyone else can find it I'd suggest deleting it, I think its storing your keystrokes - passwords, credit card#, stuff like that. If anyone who knows .dat files could look into this??